cisco v 3.1 ccna sınavı semester 3 full sorular ve cevapları

ecco · 09-07-2006, 00:34

cisco v 3.1 ccna sınavı semester 3 full sorular ve cevapları işte burda

ecco · 09-07-2006, 02:52

1
Which of the following is considered a limitation of RIP v1?

*** RIP v1 does not send subnet mask information in its updates.

RIP v1 is not widely supported by networking hardware vendors.

RIP v1 consumes excessive bandwidth by multicasting routing updates using a Class D address.

RIP v1 requires enhanced router processors and extra RAM to function effectively.

RIP v1 does not support load balancing across equal-cost paths.

RIP v1 authentication is complicated and time-consuming to configure.

2
The subnet 192.168.32.16/28 has been selected to be further subnetted to support point-to-point serial links. What is the maximum number of serial links that this plan can support?

2

3

3 if ip subnet-zero is enabled
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

*** 4

6
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

8

3
What is the default network mask for a Class B address?

255.0.0.0

*** 255.255.0.0

255.255.255.0

255.255.255.255

4
A new network is to be configured on a router. Which of the following tasks must be completed to configure this interface and implement dynamic IP routing for the new network? (Choose three.)

*** Select the routing protocol to be configured.

*** Assign an IP address and subnet mask to the interface.

Update the ip host configuration information with the device name and new interface IP address.

*** Configure the routing protocol with the new network IP address.

Configure the routing protocol with the new interface IP address and subnet mask.

Configure the routing protocol in use on all other enterprise routers with the new network information.

5
Which command must the administrator execute to disable the capability to use subnets that include the network address of the unsubnetted network?

Router(config)# no ip classless

Router(config)# no ip zero subnet

*** Router(config)# no ip subnet-zero

Router(config)# no ip zero-subnet

Router(config)# no subnet-zero

6
Which of the following problems does VLSM help to alleviate?

*** the shortage of IP addresses

the difficulty of assigning static IP addresses to hosts in large enterprises

the complexity of implementing advanced routing protocols such as OSPF and EIGRP

the shortage of network administrators qualified in the use of RIP v1 and IGRP

7
Which of the following are contained in the routing updates of classless routing protocols? (Choose two.)

*** 32-bit address

next hop router interface

*** subnet mask

unicast host address

Layer 2 address

8

An additional subnet is required for a new Ethernet link between Router1 and Router2 as shown in the diagram. Which of the following subnet addresses can be configured in this network to provide a maximum of 14 useable addresses for this link while wasting the fewest addresses?

192.1.1.16/26

192.1.1.96/28

192.1.1.160/28

192.1.1.196/27

*** 192.1.1.224/28

192.1.1.240/28

9
How often does RIP v1 send routing table updates, by default?

*** every 30 seconds

every 45 seconds

every 60 seconds

every 90 seconds

10
What does VLSM allow a network administrator to do?

utilize one subnet mask throughout an autonomous system

*** utilize multiple subnet masks in the same IP address space

utilize IGRP as the routing protocol in an entire autonomous system

utilize multiple routing protocols within an autonomous system

11
Which subnet mask is represented by the /21 notation?

255.255.224.0

*** 255.255.248.0

255.255.252.0

255.255.240.0

12

Router1 and Router2 shown in the topology have been configured with the no ip subnet-zero command. Which of the following valid VLSM network numbers could be used for the serial link between Router1 and Router2? (Choose two.)

192.168.1.0/30

*** 192.168.1.4/30

*** 192.168.1.8/30

192.168.1.96/30

192.168.1.138/30

192.168.1.190/30

13
A Class C network address has been subnetted into eight subnetworks. Using VLSM, the last subnet will be divided into eight smaller subnetworks. What bit mask must be used to create eight smaller subnetworks, each having two usable host addresses?

/26

/27

/28

/29

*** /30

/31

14

The routers in the diagram use the subnet assignments shown. What is the most efficient route summary that can be configured on Router3 to advertise the internal networks to the cloud?

192.1.1.0/26 and 192.1.1.64/27

192.1.1.128/25

192.1.1.0/23 and 192.1.1.64/23

192.1.1.0/24

*** 192.1.1.0/25

192.1.1.0/24 and 192.1.1.64/24

15
How does a router know of paths to destination networks? (Choose two.)

inspection of the destination IP address in data packets

ARP requests from connected routers

*** manual configuration of routes

*** updates from other routers

DHCP information broadcasts

updates from the SMTP management information base

16

The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology?

The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork.

*** The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the address for Serial0 of Router2.

The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.

17

A Class C address has been assigned for use in the network shown in the graphic. Using VLSM, which bit mask should be used to provide for the number of host addresses required on Router A, while wasting the fewest addresses?

/31

/30

/29

/28

*** /27

/26

18
Which command would a network administrator use to determine if the routers in an enterprise have learned about a newly added network?

router# show ip address

*** router# show ip route

router# show ip networks

router# show ip interface brief

router# debug ip protocol

router# debug rip update

19

Refer to the network shown. How will Router1 summarize and advertise the four networks attached to its Ethernet ports?

172.16.16.0/20

172.16.19.0/20

172.16.16.0/20 and 172.16.19.0/20

*** 172.16.16.0/22

172.16.18.0/24

172.16.0.0/24

20

In the network shown in the graphic, three bits were borrowed from the host portion of a Class C address. How many valid host addresses will be unused on the three point-to-point links combined if VLSM is not used?

3

4

12

36

*** 84

180

21
Which of the following statements are true regarding RIP v1 and v2? (Choose three.)

*** Both RIP versions use hop count.

Both RIP versions can provide authentication of update sources.

*** Both RIP versions use 16 hops as a metric for infinite distance.

RIP v1 uses split horizon to prevent routing loops while RIP v2 does not.

RIP v1 uses hold-down times to prevent routing loops while RIP v2 does not.

*** RIP v1 broadcasts routing table updates, while RIP v2 multicasts its updates.

22
What is the purpose of the network command used in the configuration of the RIP routing protocol?

It specifies RIP v2 as the routing protocol.

It enables the use of VLSM.

It specifies the fastest path to the destination route.

It specifies which interfaces will exchange RIP routing updates.

*** It activates RIP for all routes that exist within the enterprise network.

23

Refer to the graphic. Which command will enter a static route to network 192.168.19.0 from router C?

C(config)# ip route 192.168.19.0 192.168.17.1

C(config)# ip static-route 192.168.19.0/24 192.168.17.2

C(config)# ip route 192.168.17.1 255.255.255.0 192.168.19.0

*** C(config)# ip route 192.168.19.0 255.255.255.0 192.168.17.1

C(config)# ip route 192.168.19.0 0.0.0.0 192.168.17.2

C(config)# ip default-route 192.168.17.2 255.255.255.0 192.168.19.0

ecco · 09-07-2006, 02:55

1
What does OSPF use to calculate the cost to a destination network?

*** bandwidth

bandwidth and hop count

bandwidth and reliability

bandwidth, load, and reliablity

2
A network administrator has configured a default route on Router_A but it is not being shared with adjacent Router_B and the other routers in the OSPF area. Which command will save the administrator the time and trouble of configuring this default route on Router_B and all of the other routers in the OSPF area?

Router_A(config-router)# ospf redistribute default-route

Router_B(config-router)# ospf redistribute default-route

*** Router_A(config-router)# default-information originate

Router_B(config-router)# default-information originate

Router_A(config-router)# ip ospf update-default

Router_B(config-router)# ip ospf update-default

3
What are the benefits of the hierarchical design approach that is used in large OSPF networks? (Choose three.)

*** reduction of routing overhead

increased routing overhead

*** faster convergence

slower convergence

Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375
distribution of network instability to all areas of the network

*** isolation of network instability to one area of the network

4
Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.)

*** network address

loopback address

autonomous system number

subnet mask

*** wildcard mask

*** area ID

5
Because of security concerns, a network administrator wants to set up authentication between two routers. Which of the following commands will configure Router_A to trust Router_B with a clear text password of apollo?

Router_A(config-if)# ospf authentication-key apollo

Router_A(config-if)# ip authentication-key apollo

Router_A(config-if)# ip ospf authentication apollo

*** Router_A(config-if)# ip ospf authentication-key apollo

6

The routers in the diagram are configured as shown. The loopback interface on router R1 is labeled as lo0. All OSPF priorities are set to the default except for Ethernet0 of router R2, which has an OSPF priority of 2. What will be the result of the OSPF DR/BDR elections on the 192.1.1.0 network? (Choose two.)

R1 will be the DR

R1 will be the BDR

*** R2 will be the DR

R2 will be the BDR

R3 will be the DR

*** R3 will be the BDR

7
What information can be obtained from the output of the show ip ospf interface command? (Choose three.)

link-state age intervals

*** timer intervals

*** router ID number

link-state update intervals

*** neighbor adjacencies

8

Which command sequence will enable OSPF in the backbone area for the two Ethernet links on RouterA?

RouterA(config)# router ospf 1
RouterA(config-router)# network 172.16.4.0 0.0.1.255 area 1

*** RouterA(config)# router ospf 10
*** RouterA(config-router)# network 172.16.4.0 0.0.0.255 area 0
*** RouterA(config-router)# network 172.16.5.0 0.0.0.255 area 0

RouterA(config)# router ospf 10
RouterA(config-router)# area 0 network 172.16.4.0 0.0.1.255

RouterA(config)# router ospf 0
RouterA(config-route)# network 172.16.4.0 0.0.255.255 area 0

RouterA(config)# router ospf 0
RouterA(config-router)# network 172.16.4.0 255.255.255.0
RouterA(config-router)# network 172.16.5.0 255.255.255.0

RouterA(config)# router ospf 1
RouterA(config-router)# network 172.16.4.0 255.255.254.0 area 0

9
Which of the following are disadvantages of link-state routing? (Choose three.)

*** Link-state protocols require careful network design.

Link-state protocols are prone to routing loops.

Link-state hello updates can cause broadcast flooding.

*** Link-state protocols place significant demands on router processors and memory resources.

*** Link-state protocols require a knowledgeable network administrator.

Link-state protocols do not support Variable Length Subnet Masking.

10
What does OSPF use to reduce the number of exchanges of routing information in networks where large numbers of neighbors are present? (Choose two.)

root router

backup root router

domain router

backup domain router

*** designated router

*** backup designated router

11
What speeds up convergence in a network using link-state routing?

Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375
*** updates triggered by network changes

updates sent at regular intervals

updates sent only to directly connected neighbors

updates that include complete routing tables

12
Why is it difficult for routing loops to occur in networks that use link-state routing?

Each router builds a simple view of the network based on hop count.

Routers flood the network with LSAs to discover routing loops.

*** Each router builds a complete and synchronized view of the network.

Routers use hold-down timers to prevent routing loops.

ecco · 09-07-2006, 02:56

13

What will be the result of the DR and BDR elections for this single area OSPF network? (Choose three.)

HQ will be DR for 10.4.0.0/16.

*** Router A will be DR for 10.4.0.0/16.

*** HQ will be BDR for 10.4.0.0/16.

Router A will be DR for 10.5.0.0/16.

*** Remote will be DR for 10.5.0.0/16.

Remote will be BDR for 10.5.0.0/16.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

14
Which router is the root of an SPF tree?

border router

nearest neighboring router

*** local router

trunk router, as determined by the SPF algorithm

15

Refer to the network shown in the diagram. Which command sequence on RouterB will redistribute a Gateway of Last Resort to the other routers in OSPF area 0?

RouterB(config)# router ospf 10
RouterB(config-router)# gateway-of-last-resort 172.16.6.6

RouterB(config)# ip route 0.0.0.0 0.0.0.0 serial 0

*** RouterB(config)# ip route 0.0.0.0 0.0.0.0 172.16.6.6
*** RouterB(config)# router ospf 10
*** RouterB(config-router)# default-information originate

RouterB(config)# router ospf 10
RouterB(config-router)# default network 172.16.6.6 0.0.0.3 area 0

RouterB(config)# ip route 0.0.0.0 0.0.0.0 172.16.6.6

RouterB(config)# ip default-route 0.0.0.0 0.0.0.0 172.16.6.6
RouterB(config)# router ospf 10
RouterB(config-router)# redistribute ip default-route

16

Refer to the network diagram. When establishing adjacency relationships, which IP address would router A use to send hello packets to router B?

0.0.0.0

10.11.0.1

10.11.0.2

*** 224.0.0.5

224.0.0.6

224.0.0.255

17
Which router command will display the interface priority value and other key information for the OSPF configuration of the serial 0 interface?

router# show ospf serial 0

router# show interface serial 0 OSPF

router# show ip interface serial 0

*** router# show ip ospf interface serial 0

18
Why would a network administrator choose to enable MD5 authentication for OSPF exchanges? (Choose three.)

*** to prevent OSPF packets from being decoded by unauthorized individuals using packet sniffers

to reduce OSPF information exchange overhead

to assure that OSPF routing information takes priority over RIP or IGRP updates

to encrypt routing tables to prevent unauthorized viewing

*** to ensure that routing information comes from a valid source

*** to prevent routing information from being falsified

19
What factors should be considered when modifying OSPF hello interval and dead interval timers on a link? (Choose two.)

The dead interval timer value must be kept at four times the hello interval timer value.

Nonbroadcast networks should have shorter hello intervals than broadcast networks.

*** These intervals should not be changed unless justified by improved network performance.

*** All routers exchanging OSPF information over the link must have the same interval timer values.

Any change in these interval timer values will apply to all interfaces on the router.

Dead interval timer values should be made shorter on the designated router to improve network response.

20

RouterA, RouterB, and RouterC in the diagram are running OSPF on their Ethernet interfaces. Loopback interfaces (Lo 0) are configured as shown. What happens when RouterD is added to the network?

RouterB takes over as DR and RouterD becomes the BDR.

RouterD becomes the BDR and RouterA remains the DR.

RouterD becomes the DR and RouterA becomes the BDR.

RouterC acts as the DR until the election process is complete.

RouterD becomes the DR and RouterB remains the BDR.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

*** There is no change in the DR or BDR until either current DR or BDR goes down.

21
Which of the following should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose three.)

*** OSPF interval timers mismatch

gateway of last resort not redistributed

*** interface network type mismatch

no loopback interface configured

administrative distance mismatch

*** inconsistent authentication configuration

22
In which types of networks are OSPF DR elections necessary? (Choose two.)

point-to-point

point-to-multipoint

*** broadcast multiaccess

*** nonbroadcast multiaccess

23
Assuming that the network has converged, which of the following is true regarding the link-state database held by each router that is in the same OSPF area. ?

The link-state database is stored in a designated router and is accessed by each router in the area as needed.

*** Each router in an OSPF area has a link-state database containing the same status information.

Each router has a different link-state database depending on its location within the network.

The link-state database in each router only contains information about adjacent routers and the status of their links.

24
How can the OSPF cost for a link be established? (Choose two.)

It is set to 1544 by default for all OSPF interfaces.

*** It can be set with the ip ospf cost command.

The configured loopback addresses map to link costs.

It is calculated proportionally to observed throughput capacity of the router.

*** It may be calculated using the formula 108/bandwidth.

ecco · 09-07-2006, 02:57

1 Why is it important to create standards for network consistency? (Choose three.)

*** reduces network complexity *
increases unplanned downtime
*** limits unplanned downtime *
increases bandwidth by regulating networking performance
*** limits events that may impact network performance *
2 A telnet session can be established when using the IP address of a router but not the name of the router. Which of the following is the most likely cause of the problem?

*** an incorrect host table entry *
an incorrect ARP table entry
an incorrect routing table entry
an incorrect protocol configured
an incorrect subnet mask
3
The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
Sydney(config-if)# no shutdown *
*** Sydney(config-if)# ip address 201.100.53.1 255.255.255.224 *
*** Sydney(config-if)# clock rate 56000 *
Sydney(config-if)# ip host Melbourne 201.100.53.2
4 Which commands display information about the IOS or configuration files stored in router memory? (Choose three.)

Router# show ram
*** Router# show flash *
Router# show hosts
Router# show history
*** Router# show version *
*** Router# show startup-config *
5 Select the interface descriptions that provide the most appropriate information. (Choose two.)

circuit number
*** host IP address *
*** telnet password *
number of hops between routers
purpose and location of the interface
6 Select the commands necessary to remove any existing configuration on a router. (Choose two.)

delete flash
*** erase startup-config *
*** erase running-config *
restart
reload
delete NVRAM
7 Router names are associated with IP addresses. What is the name of the table that is created by this association?

IP table
SAP table
ARP table
MAC table
*** HOST table *
RARP table
8 Select the commands that will store the current configuration file to a network TFTP server? (Choose two.)

Router# copy run tftp
Router# copy tftp run
*** Router# copy running-config tftp *
*** Router# copy tftp running-config *
Router(config)# copy running-config tftp
Router(config)# copy tftp running-config
9 Which statements are true regarding the recommended use of login banners? (Choose two.)

*** They should be used to display information regarding system changes or maintenance. *
*** They should be used to display warnings to unauthorized users. *
They should be used to display welcome messages prior to login.
They should be seen only by system administrators.
They should provide confirmation of incoming IP addresses.
10 What is the effect of the command ip host HQ 192.1.1.1?

permits a ping to 192.1.1.1 with the command ping HQ
assigns the description HQ to the interface with the ip address 192.1.1.1
renames the router as HQ
defines a static route to the host 192.1.1.1
*** configures the remote device HQ with the ip address of 192.1.1.1 *
11 What are the default settings for a serial interface? (Choose three.)

*** DTE *
DCE
*** shutdown *
*** no IP address *
clock rate 56000
encapsulation ARPA
12 What will be the response from the router after the command, "router(config)# hostname portsmouth" is entered?

portsmouth#
*** portsmouth(config)# *
invalid input detected
router(config-host)#
hostname = portsmouth
portsmouth#
? command not recognized
router(config)#
13 A network administrator wants to assure that any password that permits access to the privileged EXEC mode is not shown in plain text in the configuration files. Which commands will accomplish this task? (Choose two.)

Router(config)#enable cisco secret
Router(config)#enable cisco
*** Router(config)#service password-encryption *
*** Router(config)#enable secret cisco *
Router(config)#encrypt-all cisco
Router(config)#service encryption-password
14 Which command sequence will permit access to all five router virtual terminal lines with a password of cisco?

Router(config-line)#config telnet
Router(config-line)# line vty 0 5
Router(config-line)# password cisco

Router(config)# line vty 0 4
Router(config)# password cisco

*** Router(config)# line vty 0 4*
Router(config-line)# password cisco
Router(config-line)# login

Router(config-line)# config telnet
Router(config-line)# password cisco
Router(config-line)# sessions 0 4
15 An IP network is to be added to a router Ethernet interface. What steps must be performed to configure this interface to allow connectivity to the hosts on this LAN? (Choose two.)

*** Enter the command no shutdown. *
A password must be set on the interface.
The interface DCE clock rate must be set.
The interface must be configured for virtual terminal access.
*** The interface must be configured with an IP address and subnet mask. *
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375
The router must be put in setup mode in order for the interface to be configured.

16 What is the default state of the interfaces on a router?

up, line protocol down
*** down, line protocol down *
adminstratively down, line protocol down
up, line protocol up
17 Which are valid router prompts? (Choose three.)

Router(privileged)#
*** Router(config)# *
Router(command)#
*** Router(config-router)# *
*** Router(config-if)# *
Router(exec)#
18 Select the correct sequence of commands that will configure "Engineering LAN" as the interface description on the Ethernet0 interface.

1)Router# configure terminal
Router(config)# interface e0 description Engineering LAN
*** 2)Router# configure terminal*
Router(config)# interface e0
Router(config-if)# description Engineering LAN
3)Router# configure terminal
Router(config)# interface e0
Router(config-if)# interface description Engineering LAN
4)Router# configure terminal
Router(config)# description Engineering LAN
19 Select the recommended locations to save a running-config file. (Choose three.)

all network hosts
*** network server *
*** floppy disk *
*** TFTP server *
server that is not on the network
20 Which command turns on a router interface?

Router(config-if)# enable
Router(config-if)# no down
Router(config-if)# s0 active
Router(config-if)# interface up
*** Router(config-if)# no shutdown *
21 Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)

*** VTY interface *
*** console interface *
Ethernet interface
secret EXEC mode
*** privileged EXEC mode *
router configuration mode
22 What must be configured to establish a serial link between two routers that are directly connected?

a clock rate on the DTE interface
a no clock rate command on the DTE interface
no configuration is required
*** a clock rate on the DCE interface *

ecco · 09-07-2006, 02:58

1
Which attribute is used by a bridge to make forwarding decisions?

source IP address

source MAC address

destination IP address

*** destination MAC address

Layer 4-7 protocol address

2
What is the effect of adding additional hosts to a half-duplex Ethernet network? (Choose three.)

*** collisions increase

collisions decrease

*** jam signals increase

jam signals decrease

*** throughput decreases

throughput increases

3
How does an Ethernet bridge handle an incoming frame? (Choose three.)

The source MAC address and input interface pair are added to the bridging table.

*** The destination MAC address and input interface pair are added to the bridging table.

If no match to the destination MAC address is found in the bridging table, the frame is discarded.

*** If no match to the destination MAC address is found in the bridging table, the frame is flooded out all other interfaces.

*** If a match to the destination MAC address is found in the bridging table, the frame is forwarded out the associated interface.

If a match to the source MAC address is found in the bridging table, the frame is forwarded to all ports.

4
Which of the following is used to build a switching table?

source IP addresses

destination IP addresses

destination MAC addresses

*** source MAC addresses

5
After a collision occurs on a half-duplex Ethernet network, how does a transmitting host proceed? (Choose two.)

It does not stop transmitting.

*** It listens to determine if the network is in use before attempting to retransmit.

It resumes transmitting while the jam signal clears the wire.

*** It resumes transmitting based on the NIC back-off algorithm.

It will take priority and be the first host to transmit after the collision.

6
Which statements describe asymmetric switching? (Choose three.)

It uses data compression algorithms to manage higher bandwidth interfaces.

*** It is often used to provide high bandwidth uplinks for a number of lower bandwidth client interfaces.

*** It provides connections between network segments that operate at different bandwidths.

It uses cut-through forwarding when going from a lower bandwidth to a higher bandwidth interface.

It is used to provide more bandwidth to network clients than to backbone or server links.

*** It may require buffering frames before forwarding to the destination interface.

7
Which statements are true concerning the shared memory buffering used by an Ethernet switch? (Choose two.)

*** Frames are processed through a single queue.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

*** All frames are placed in a common memory buffer.

Frames are placed in a queue for the destination port.

A port with a full memory buffer can cause frames for available ports to be delayed.

Each switch port is statically assigned a buffer of equal size.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

8
Which statements are true regarding hubs? (Choose three.)

*** Hubs operate at Layer 1 of the OSI model.

They create separate collision domains.

*** Signals are distributed through all ports.

Layer 2 addresses are used to make decisions.

They calculate the CRC for each frame received prior to forwarding.

*** Bandwidth is shared among all connected users.

9
What are the functions of routers? (Choose three.)

improving network performance by increasing latency by twenty to thirty percent

*** segmenting broadcast domains

*** forwarding packets based on destination network layer addresses

*** segmenting collision domains

forwarding packets as soon as the destination MAC address is read

developing routing table entries based on source IP addresses

10
Which of the following devices use physical addresses to make forwarding decisions? (Choose two.)

hub

*** bridge

router

*** switch

concentrator

multi-port repeater

11
Which form of buffering is used by bridges?

cut-through

fragment-free

fast-forward

*** store-and-forward

12
Switching may be implemented to improve the performance of which of the following networking technologies? (Choose three.)

*** Ethernet 10BASE-T

Ethernet 10BASE2

*** FDDI

*** Token Ring

EIA-232

13
Hubs are concerned with which PDU?

*** bits

frames

packets

datagrams

14
What does switch latency describe?

forwarding method used by a switch

time it takes for a frame to be received by a switch

*** improvement in network performance from using a switch

time delay between when a frame enters and exits a switch

increase in the size of a collision domain from using a switch

15
Where are switching tables stored in a Cisco LAN switch?

ROM

*** CAM

Flash

SIMM

NRAM

16
Which switching mode changes to store-and-forward mode after it detects a given number of errors?

cut-through

adaptive fast-forward

fragment-free

*** adaptive cut-through

17
Which of the following is a Layer 2 broadcast address?

0.0.0.0

255.255.255.255

11:11:11:11

FF:FF:FF:FF

*** FF:FF:FF:FF:FF:FF

18

Refer to the graphic. Which point in the frame must be reached before it is forwarded by a switch that is using fast-forward mode?

A

B

*** C

D

E
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

F

19
Why does a switch have higher throughput compared to a bridge?

Switching occurs in software.

*** Switching occurs in hardware.

Switches create virtual circuits.

Switches segment LANs.

20
What is the potential throughput of a 10 Mbps Ethernet connection operating in full-duplex mode? (Choose two.)

10 Mbps total

*** 20 Mbps total

5 Mbps TX and 5 Mbps RX

*** 10 Mbps TX and 10 Mbps RX

40 to 60 percent on TX and RX

21

An Ethernet switch has developed the MAC address table shown at the top of the graphic. What action will the switch take when it receives the frame shown at the bottom of the graphic?

forward the frame out all interfaces

forward the frame out all interfaces except Interface3

discard the frame

*** forward the frame out Interface1

forward the frame out Interface2

forward the frame out Interface3

22
Which of the following are true regarding the addition of switches to a network? (Choose two.)

*** They increase the number of collision domains.

They decrease the number of collision domains.

They increase the number of broadcast domains.

They decrease the number of broadcast domains.

*** They increase the amount of bandwidth available to users.

They decrease the amount of bandwidth available to users.

23
What is designed to prevent multiple devices on an Ethernet network from transmitting at the same time?

synchronization clock

*** CSMA/CD access method

token access method

shared medium

24

Refer to the graphic. Which point must be reached before a frame is forwarded when the switch is using store-and-forward mode?

A

B

C

D

E

*** F

ecco · 09-07-2006, 03:00

1
Which attribute is used by a bridge to make forwarding decisions?

source IP address

source MAC address

destination IP address

*** destination MAC address

Layer 4-7 protocol address

2
What is the effect of adding additional hosts to a half-duplex Ethernet network? (Choose three.)

*** collisions increase

collisions decrease

*** jam signals increase

jam signals decrease

*** throughput decreases

throughput increases

3
How does an Ethernet bridge handle an incoming frame? (Choose three.)

The source MAC address and input interface pair are added to the bridging table.

*** The destination MAC address and input interface pair are added to the bridging table.

If no match to the destination MAC address is found in the bridging table, the frame is discarded.

*** If no match to the destination MAC address is found in the bridging table, the frame is flooded out all other interfaces.

*** If a match to the destination MAC address is found in the bridging table, the frame is forwarded out the associated interface.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

If a match to the source MAC address is found in the bridging table, the frame is forwarded to all ports.

4
Which of the following is used to build a switching table?

source IP addresses

destination IP addresses

destination MAC addresses

*** source MAC addresses

5
After a collision occurs on a half-duplex Ethernet network, how does a transmitting host proceed? (Choose two.)

It does not stop transmitting.

*** It listens to determine if the network is in use before attempting to retransmit.

It resumes transmitting while the jam signal clears the wire.

*** It resumes transmitting based on the NIC back-off algorithm.

It will take priority and be the first host to transmit after the collision.

6
Which statements describe asymmetric switching? (Choose three.)

It uses data compression algorithms to manage higher bandwidth interfaces.

*** It is often used to provide high bandwidth uplinks for a number of lower bandwidth client interfaces.

*** It provides connections between network segments that operate at different bandwidths.

It uses cut-through forwarding when going from a lower bandwidth to a higher bandwidth interface.

It is used to provide more bandwidth to network clients than to backbone or server links.

*** It may require buffering frames before forwarding to the destination interface.

7
Which statements are true concerning the shared memory buffering used by an Ethernet switch? (Choose two.)

*** Frames are processed through a single queue.

*** All frames are placed in a common memory buffer.

Frames are placed in a queue for the destination port.

A port with a full memory buffer can cause frames for available ports to be delayed.

Each switch port is statically assigned a buffer of equal size.

8
Which statements are true regarding hubs? (Choose three.)

*** Hubs operate at Layer 1 of the OSI model.

They create separate collision domains.

*** Signals are distributed through all ports.

Layer 2 addresses are used to make decisions.

They calculate the CRC for each frame received prior to forwarding.

*** Bandwidth is shared among all connected users.

9
What are the functions of routers? (Choose three.)

improving network performance by increasing latency by twenty to thirty percent

*** segmenting broadcast domains

*** forwarding packets based on destination network layer addresses

*** segmenting collision domains

forwarding packets as soon as the destination MAC address is read

developing routing table entries based on source IP addresses

10
Which of the following devices use physical addresses to make forwarding decisions? (Choose two.)

hub

*** bridge

router

*** switch

concentrator

multi-port repeater

11
Which form of buffering is used by bridges?

cut-through

fragment-free

fast-forward

*** store-and-forward

12
Switching may be implemented to improve the performance of which of the following networking technologies? (Choose three.)

*** Ethernet 10BASE-T

Ethernet 10BASE2

*** FDDI

*** Token Ring

EIA-232

13
Hubs are concerned with which PDU?

*** bits

frames

packets

datagrams

14
What does switch latency describe?

forwarding method used by a switch

time it takes for a frame to be received by a switch

*** improvement in network performance from using a switch

time delay between when a frame enters and exits a switch

increase in the size of a collision domain from using a switch

15
Where are switching tables stored in a Cisco LAN switch?

ROM

*** CAM

Flash

SIMM

NRAM

16
Which switching mode changes to store-and-forward mode after it detects a given number of errors?

cut-through

adaptive fast-forward

fragment-free

*** adaptive cut-through

17
Which of the following is a Layer 2 broadcast address?

0.0.0.0

255.255.255.255

11:11:11:11

FF:FF:FF:FF

*** FF:FF:FF:FF:FF:FF

18

Refer to the graphic. Which point in the frame must be reached before it is forwarded by a switch that is using fast-forward mode?
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

A

B

*** C

D

E

F

19
Why does a switch have higher throughput compared to a bridge?

Switching occurs in software.

*** Switching occurs in hardware.

Switches create virtual circuits.

Switches segment LANs.

20
What is the potential throughput of a 10 Mbps Ethernet connection operating in full-duplex mode? (Choose two.)

10 Mbps total

*** 20 Mbps total

5 Mbps TX and 5 Mbps RX

*** 10 Mbps TX and 10 Mbps RX

40 to 60 percent on TX and RX

21

An Ethernet switch has developed the MAC address table shown at the top of the graphic. What action will the switch take when it receives the frame shown at the bottom of the graphic?

forward the frame out all interfaces

forward the frame out all interfaces except Interface3

discard the frame

*** forward the frame out Interface1

forward the frame out Interface2

forward the frame out Interface3

22
Which of the following are true regarding the addition of switches to a network? (Choose two.)

*** They increase the number of collision domains.

They decrease the number of collision domains.

They increase the number of broadcast domains.

They decrease the number of broadcast domains.

*** They increase the amount of bandwidth available to users.

They decrease the amount of bandwidth available to users.

23
What is designed to prevent multiple devices on an Ethernet network from transmitting at the same time?

synchronization clock

*** CSMA/CD access method

token access method

shared medium

24

Refer to the graphic. Which point must be reached before a frame is forwarded when the switch is using store-and-forward mode?

A

B

C

D

E

*** F

ecco · 09-07-2006, 03:02

1
Which attribute is used by a bridge to make forwarding decisions?

source IP address

source MAC address

destination IP address

*** destination MAC address

Layer 4-7 protocol address

2
What is the effect of adding additional hosts to a half-duplex Ethernet network? (Choose three.)

*** collisions increase

collisions decrease

*** jam signals increase

jam signals decrease

*** throughput decreases

throughput increases

3
How does an Ethernet bridge handle an incoming frame? (Choose three.)

The source MAC address and input interface pair are added to the bridging table.

*** The destination MAC address and input interface pair are added to the bridging table.

If no match to the destination MAC address is found in the bridging table, the frame is discarded.

*** If no match to the destination MAC address is found in the bridging table, the frame is flooded out all other interfaces.

*** If a match to the destination MAC address is found in the bridging table, the frame is forwarded out the associated interface.

If a match to the source MAC address is found in the bridging table, the frame is forwarded to all ports.

4
Which of the following is used to build a switching table?

source IP addresses

destination IP addresses

destination MAC addresses

*** source MAC addresses

5
After a collision occurs on a half-duplex Ethernet network, how does a transmitting host proceed? (Choose two.)

It does not stop transmitting.

*** It listens to determine if the network is in use before attempting to retransmit.

It resumes transmitting while the jam signal clears the wire.

*** It resumes transmitting based on the NIC back-off algorithm.

It will take priority and be the first host to transmit after the collision.

6
Which statements describe asymmetric switching? (Choose three.)

It uses data compression algorithms to manage higher bandwidth interfaces.

*** It is often used to provide high bandwidth uplinks for a number of lower bandwidth client interfaces.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

*** It provides connections between network segments that operate at different bandwidths.

It uses cut-through forwarding when going from a lower bandwidth to a higher bandwidth interface.

It is used to provide more bandwidth to network clients than to backbone or server links.

*** It may require buffering frames before forwarding to the destination interface.

7
Which statements are true concerning the shared memory buffering used by an Ethernet switch? (Choose two.)

*** Frames are processed through a single queue.

*** All frames are placed in a common memory buffer.

Frames are placed in a queue for the destination port.

A port with a full memory buffer can cause frames for available ports to be delayed.

Each switch port is statically assigned a buffer of equal size.

8
Which statements are true regarding hubs? (Choose three.)

*** Hubs operate at Layer 1 of the OSI model.

They create separate collision domains.

*** Signals are distributed through all ports.

Layer 2 addresses are used to make decisions.

They calculate the CRC for each frame received prior to forwarding.

*** Bandwidth is shared among all connected users.

9
What are the functions of routers? (Choose three.)

improving network performance by increasing latency by twenty to thirty percent

*** segmenting broadcast domains

*** forwarding packets based on destination network layer addresses

*** segmenting collision domains

forwarding packets as soon as the destination MAC address is read

developing routing table entries based on source IP addresses

10
Which of the following devices use physical addresses to make forwarding decisions? (Choose two.)
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

hub

*** bridge

router

*** switch

concentrator

multi-port repeater

11
Which form of buffering is used by bridges?

cut-through

fragment-free

fast-forward

*** store-and-forward

12
Switching may be implemented to improve the performance of which of the following networking technologies? (Choose three.)

*** Ethernet 10BASE-T

Ethernet 10BASE2

*** FDDI

*** Token Ring

EIA-232

13
Hubs are concerned with which PDU?

*** bits

frames

packets

datagrams

14
What does switch latency describe?

forwarding method used by a switch

time it takes for a frame to be received by a switch

*** improvement in network performance from using a switch

time delay between when a frame enters and exits a switch

increase in the size of a collision domain from using a switch

15
Where are switching tables stored in a Cisco LAN switch?

ROM

*** CAM

Flash

SIMM

NRAM

16
Which switching mode changes to store-and-forward mode after it detects a given number of errors?

cut-through

adaptive fast-forward

fragment-free

*** adaptive cut-through

17
Which of the following is a Layer 2 broadcast address?

0.0.0.0
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

255.255.255.255

11:11:11:11

FF:FF:FF:FF

*** FF:FF:FF:FF:FF:FF

18

Refer to the graphic. Which point in the frame must be reached before it is forwarded by a switch that is using fast-forward mode?

A

B

*** C

D

E

F

19
Why does a switch have higher throughput compared to a bridge?

Switching occurs in software.

*** Switching occurs in hardware.

Switches create virtual circuits.

Switches segment LANs.

20
What is the potential throughput of a 10 Mbps Ethernet connection operating in full-duplex mode? (Choose two.)

10 Mbps total

*** 20 Mbps total

5 Mbps TX and 5 Mbps RX

*** 10 Mbps TX and 10 Mbps RX

40 to 60 percent on TX and RX

21

An Ethernet switch has developed the MAC address table shown at the top of the graphic. What action will the switch take when it receives the frame shown at the bottom of the graphic?

forward the frame out all interfaces

forward the frame out all interfaces except Interface3

discard the frame

*** forward the frame out Interface1

forward the frame out Interface2

forward the frame out Interface3

22
Which of the following are true regarding the addition of switches to a network? (Choose two.)

*** They increase the number of collision domains.

They decrease the number of collision domains.

They increase the number of broadcast domains.

They decrease the number of broadcast domains.

*** They increase the amount of bandwidth available to users.

They decrease the amount of bandwidth available to users.

23
What is designed to prevent multiple devices on an Ethernet network from transmitting at the same time?

synchronization clock

*** CSMA/CD access method

token access method

shared medium

24

Refer to the graphic. Which point must be reached before a frame is forwarded when the switch is using store-and-forward mode?

A

B

C

D

E

*** F

ecco · 09-07-2006, 03:03

1

Refer to the graphic. Server sends an ARP request for the MAC address of its default gateway. If STP is not enabled, what will be the result of this ARP request?

Router_1 will kill the broadcast and reply with the MAC address of the next hop router.

Switch_A will reply with the MAC address of the Router_1 E0 interface.

*** Switch_A and Switch_B will continuously flood the message onto the network.

Switch_B will broadcast the request and reply with the Router_1 address.

The message will cycle around the network until its TTL is exceeded.

2
How is the information contained in BPDUs used by switches? (Choose two.)

to prevent loops by sharing bridging tables between connected switches

to set the duplex mode of a redundant link

*** to determine the shortest path to the root bridge

*** to determine which ports will forward frames as part of the spanning tree

to activate looped paths throughout the network

3
What elements will exist in a converged network with one spanning tree? (Choose two.)

*** one root bridge per network

all non-designated ports forwarding

*** one root port per non-root bridge

multiple designated ports per segment

one designated port per network

4
Which of the following criteria does a switch use to select the root bridge? (Choose two.)

memory size

*** bridge priority

switching speed

number of ports

*** base MAC address

switch location

5
How does a switch forward a multicast frame through the network?

It floods it to all ports as a broadcast.

It is forwarded only to ports that contain the destination address.

It is sent to the port that contains the first destination address.

*** It floods it to all ports except the one it was received on.

It is dropped and not sent to any address.

6
What happens when there is a topology change on a network that utilizes STP ? (Choose two.)

*** User traffic is disrupted until recalculation is complete.

The switch recomputes the Spanning Tree topology after the network converges.

All ports are placed in learning state until convergence has occurred.

*** A delay of up to 50 seconds is incurred for convergence of the new Spanning Tree topology.

User data is forwarded while BPDUs are exchanged to recompute the topology.

7
How much time does it take for a switch port to go from the blocking state to the forwarding state?

2 seconds

15 seconds

20 seconds

*** 50 seconds

8
Following a link failure, when does Rapid Spanning Tree Protocol allow point-to-point and edge type links to go to the forwarding state?

in 15 seconds

never

*** immediately

in 30 seconds

after 90 seconds

9

What will be the port assignments and port states in the STP-enabled network shown in the graphic? (Choose two.)

*** Port 1/1 will be a root port, 1/11 will be a designated port.

Port 1/1 will be a designated port, Port 1/11 will be a root port.

Port 1/2 will be a root port, 1/12 will be a designated port.

Port 1/1 will be blocked

*** Port 1/12 will be blocked.

10
Which algorithm is used to create a loop free switched topology?

*** Spanning Tree

Shortest Path First
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

Dykstra

Rapid Tree

Bellman-Ford

11
Which of the following are problems that can occur in redundantly switched networks? (Choose three.)

*** broadcast storms

corrupted ARP tables

duplicate MAC addresses

inaccurate routing tables

*** multiple copies of Ethernet frames

*** MAC address table instability

12
How can a network administrator influence which STP switch becomes the root bridge?

Configure the switch as the static root bridge.

Change the BPDU to a higher value than that of the other switches in the network.

Change the BPDU to a lower value than that of the other switches in the network.

*** Set the switch priority to a smaller value than that of the other switches in the network.

Set the switch priority to a higher value than that of the other switches in the network.

13
What features of the Spanning-Tree Protocol contribute to the time it takes for a switched network to converge after a topology change occurs? (Choose three.)
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

the max-age timer

the listening forward delay

*** the spanning-tree hold down timer

*** the learning forward delay

the spanning-tree path cost

Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375
*** the blocking delay

14
Which of the following are valid STP port states? (Choose three.)

*** blocking

*** learning

converging

*** listening

switching

15
How often are BPDUs sent by default in a network using the spanning-tree algorithm?

every second

*** every two seconds

every three seconds

every four seconds

16
In which STP state does a port record MAC addresses but not forward user data?

blocking

*** learning

disabling

listening

forwarding

17
What is meant by "five nines" network uptime?

A network should be available until 9:00 pm five days of the week.

*** A network should be functioning 99.999% of the time.

There should be five nine-port uplinks for each backbone segment.

Five percent of network expenditures should address 99% of user requirements.

Nothing short of 100% network uptime is acceptable in modern networks.

18

Refer to the network shown in the graphic. Host1 needs to transfer data to host2, but host1 has no MAC address entry in its ARP cache for host2. What will happen on the network as host1 prepares to transmit its data to host2?

Host1 will receive an ICMP destination unknown message from switch3.

*** All hosts in the network shown will receive an ARP request message from host1.

Multicasting will occur until host2 is located.

Switch3 will send the host2 MAC address from its bridging table to host1.

A broadcast storm will occur.

19
What link types have been defined for Rapid Spanning-Tree Protocol? (Choose three.)

*** shared

end-to-end

*** edge-type

boundary-type

point-to-many

*** point-to-point

20
What characteristic of Ethernet makes a redundantly switched network prone to loops?

Routers are only able to prevent loops at Layer 3, while Ethernet exists at Layer 2.

*** The Ethernet protocol has no TTL mechanism.

Switches lack the sophisticated software required to prevent loops.

Looping of frames is a reliability mechanism built in to the Ethernet protocol.

21
What is the first step in the process of convergence in a spanning tree topology?

*** election of the root bridge

determination of the designated port for each segment

blocking of the non-designated ports

selection of the designated trunk port

activation of the root port for each segment

22

Switch_A and Switch_B shown in the graphic receive an ARP request from the host and forward it out their ports. The switches receive the forwarded requests from each other and in turn flood the requests again. What will be the result if this process continues?

*** a broadcast storm

multicast errors

ARP table errors

MAC address instability

redundant unicast frame forwarding

23
In which STP state does a switch port transmit user data and learn MAC addresses?

blocking

learning

disabling

listening

*** forwarding

24
Which of the following describe the BIDs used in a spanning tree topology? (Choose two.)

They are sent out by the root bridge only after the inferior BPDUs are sent.

*** They consist of a bridge priority and MAC address.

Only the root bridge will send out a BID.

*** They are used by the switches in a spanning tree topology to elect the root bridge.

The switch with the fastest processor will have the lowest BID.

ecco · 09-07-2006, 03:05

1
Which of the following states the 80/20 rule of end-to-end VLANs?

80% of network resources should be remote and 20% should be on the local VLAN.

80% of VLANs should be static and the remaining 20% should be dynamic.

*** 80% of network traffic should be local and 20% remote.

80% of the network sources should be centralized at the core layer and the remaining 20% at the distribution layer.

80% of traffic should be routed and 20% should be switched.

2
Which of the following describe networks in which the use of static VLANs is appropriate? (Choose three.)

*** Workstations, departments, and network resources are seldom moved.

VLAN port membership frequently changes.

*** Robust VLAN management software is available to the network administrator.

*** The overhead required to manage VLAN MAC address and custom filtering tables is not desirable.

VLANs are often added, deleted, and modified.

3
Which factors influence the number of VLANs that may be required on a switch? (Choose three.)

the physical addressing scheme

*** traffic patterns in the network

*** types of applications in use

the adaptability of the network

*** workgroup functions and commonality

the tagging option used for VLAN identification

4
If a switch connects 12 collision domains and is configured with three VLANs, how many broadcast domains does it have?

1

*** 3

4

12

5
A network administrator has configured a switch with VLANs. Hosts will join the VLANs based on their MAC or IP address. What type of VLANs have been configured on the switch?

*** dynamic

database

multiple

port-based

6
Which of the following statements are true regarding a root bridge in a spanning tree topology? (Choose two.)

*** The root bridge timers control BPDU traffic on the network.

Only the show commands on the switch can display root bridge information.

*** It is the central point of a spanning tree topology.

Storm control is enabled by default.

VLANs cannot be trunked between switches until the root bridge has been elected.

7
Switch-A and Switch-B are both configured with ports in the Marketing, Sales, Accounting, and Admin VLANs. Each VLAN contains 12 users. How many different subnetworks will be needed to enable routed connectivity between the VLANs?

1

*** 4

12

48

8
What happens to the member ports of a VLAN when the VLAN is deleted?

*** They become inactive.

They default back to the management VLAN.

They automatically become a part of VLAN1.

They must be assigned to another VLAN before the original VLAN can be deleted.

They remain a part of that VLAN until the switch is rebooted. They then become members of the management VLAN.

9
Which of the following are methods of establishing VLAN membership? (Choose three.)

*** logical addresses

*** physical addresses

ISL addresses

*** switch port attachment

hardware platform

traffic pattern

10
A network administrator is attempting to configure routing between VLANs over a trunked link. A trunk link cannot be established between a switch and a router. Which of the following are possible sources of this problem? (Choose two.)

*** The router IOS does not support trunking.

The port is connected and is not receiving alignment and FCS errors.

*** The switch duplex and speed are not set properly.

The router and switch are running different versions of STP.

The switch IP address is incorrectly configured.

11
What does a switch do when it receives a frame and the source address is unknown?

The switch will discard the frame.

The switch will request the sender resend the frame.

*** The switch will map the source address to the port on which it was received.

The switch will flood the frame to all attached devices.

The switch will issue an ARP request to confirm that the source exists.

12
What needs to be done when deleting an entire VLAN? (Choose three.)

*** Enter database configuration mode.

Reboot the switch in order for the changes to take effect.

*** Use the negative form of the command that was used to create the VLAN.

*** Reassign the switch ports from the deleted VLAN to other VLANs if they are to be used.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

Use the erase vlan command in global configuration mode.

Delete the vlan.dat file from flash.

13
A network administrator has configured a switch with three VLANs: VLAN1, VLAN2, and VLAN3. Port 10 is to be assigned to VLAN3. Which of the following commands are needed to assign port 10 to VLAN3? (Choose three.)

Switch_1(config)# switchport interface fastethernet 0/10

*** Switch_1(config-if)# switchport mode access

Switch_1(config-if)# switchport access

*** Switch_1(config-if)# switchport access vlan 3

*** Switch_1(config)# interface fastethernet 0/10

Switch_1# vlan database

14
What are the characteristics of VLAN1 in a default switch configuration? (Choose three.)

*** CDP messages are only sent on VLAN1.

*** VLAN1 is reserved for links between switches.

*** All switch ports are members of VLAN1.

VLAN1 must be created before ports can be assigned to it.

Only switch port 0/1 is assigned to VLAN1.

An IP address configured on the switch will only apply to ports on VLAN1.

15
A network administrator has just finished configuring a switch with multiple VLANs. A workstation on VLAN2 cannot communicate with a workstation on VLAN3. What needs to be done to correct this problem?

*** The traffic needs to be routed between the two VLANs.

The hosts must be reconfigured to be on the same logical network.

The VLANs need to be configured to be on the same broadcast domain.

The switch must be configured to share VLAN traffic.

16
What is true of the method by which VLAN membership is identified in Ethernet frames? (Choose two.)

*** The frame header is in its original format when it reaches the endpoint device.

The VLAN membership of frames does not need to be identified unless ISL is in use.

*** The Ethernet frame is encapsulated or modified with the VLAN ID information.

The VLAN ID is removed by the endpoint device upon delivery of the frame.

17
Which approach to assigning VLAN membership maximizes forwarding performance?

membership by MAC address

membership by logical address

membership by protocol

*** membership by port

membership by operating system

18
Which of the following commands will assign switch port 0/9 to VLAN3?

*** Switch(config-if)# switchport access vlan 3

Switch(config-if)# switchport vlan 3

Switch(config-if)# switchport access 3

Switch(vlan)# switchport 0/9

Switch(vlan)# access switchport 0/9

19
How does a bridge handle the frames that it receives? (Choose three.)
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

If the source is unknown, the source port is shutdown.

If the source port of a frame is unknown, a bridge will issue an ARP request.

*** If the destination is on another segment, the bridge forwards the frame only to the correct interface.

A bridge forwards frames for unknown destinations to the default gateway.

*** If the destination port is unknown, a bridge will flood the frame to all ports in the broadcast domain, except for the source port.

*** If the destination of the frame is on the same segment as the source, a bridge will not forward the frame.

20
If two 12-port hubs are connected to a switch that has three VLANs configured, how many bridging tables will the switch maintain?

1

2

*** 3

12

36

21
VLAN 10 needs to be removed from a switch. Which command must the administrator enter in order to accomplish this task?

Switch(config-if)# no switchport access vlan 10

Switch(config-if)# erase switchport access vlan 10

*** Switch(vlan)# no vlan 10

Switch(vlan)# no vlan database 10

22
How does the use of VLANs benefit an organization? (Choose two.)

by centralizing departmental staff and network resources together in a single physical area

*** by allowing organizational flexibility by grouping users together by function instead of physical location

*** by simplifying the task of adding and moving network resources and users in a growing organization

by reducing the number of broadcast domains in an enterprise network

by eliminating the need for routing traffic in large networks

by reducing network management costs by replacing many Layer 2 devices with a few Layer 3 devices

23

Refer to the network shown in the graphic. Host A on VLAN1 has sent a message requesting the MAC address of its default gateway. Which of the following network hosts will process this message?

The message will be seen by the hosts on VLAN1 and VLAN2.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

The message will be seen only by the hosts connected to Switch1.

The message will be seen only by the hosts connected to VLAN1 on Switch1.

*** The message will be seen by the hosts connected to VLAN1 on Switch1 and Switch2.

The message will only be seen by router interface e0.

24
Which of the following commands are used to verify VLAN configuration? (Choose two.)

*** Switch# show vlan id id_number

*** Switch# show vlan

Switch# show config vlan id_number

Switch# show vlan config id_number

Switch# show interface vlan id_number

ecco · 09-07-2006, 03:08

1
What information does frame tagging add to each frame to allow delivery of frames across a switched trunk?

the destination MAC address

the switch MAC address

*** the VLAN ID

the BID

2

Switch1 is not participating in the VTP management process with the other switches shown in the graphic. What are the possible reasons for this? (Choose two.)

Switch2 is in transparent mode.

Switch1 is in client mode.

*** Switch1 is using VTP version 1 and Switch2 is using VTP version 2.

Switch2 is in server mode.

*** Switch1 is in a different management domain.

Switch1 has no VLANs.

3

A router is configured to connect to a trunked uplink as shown in the graphic. A packet is received on the FastEthernet 0/1 physical interface from VLAN 10. The packet destination address is 192.168.1.120. What will the router do with this packet?

The router will forward the packet out interface FastEthernet 0/1.1 tagged for VLAN 10.

*** The router will forward the packet out interface FastEthernet 0/1.2 tagged for VLAN 60.

The router will forward the packet out interface FastEthernet 0/1.3 tagged for VLAN 60.

The router will forward the packet out interface FastEthernet 0/1.3 tagged for VLAN 120.

The router will not process the packet since the source and destination are on the same subnet.

The router will drop the packet since no network that includes the source address is attached to the router.

4
What can cause a VTP configured switch to issue a summary advertisement? (Choose two.)

*** A new client switch has been added to the management domain.

A new host has been attached to a switch in the management domain.

A port on a switch in the management domain has changed to blocking mode.

*** A five-minute update timer has elapsed.

The advertisement revision number has reached n+1.

5

A switch is configured with the commands shown in the diagram. Host1 is connected to port 0/4 with an IP address of 192.168.1.22/28. Host2 is connected to port 0/5 with an IP address of 192.168.1.33/28. Host3 is connected to port 0/6 with an IP address of 192.168.1.30/28. Select the statements that describe the success of pinging from one host to another. (Choose three.)
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

Host1 can ping Host2.

*** Host1 cannot ping Host2.

*** Host1 can ping Host3.

Host1 cannot ping Host3.

Host2 can ping Host3.

*** Host2 cannot ping Host3.

6

Refer to the graphic. What are some advantages of replacing the individual VLAN links between Switch1 and Switch2 with a single trunk line? (Choose three.)

*** It would free 2 switch ports on each switch.

It would free 3 switch ports on each switch.

*** It would save 2 cabling runs.

It would save 3 cabling runs.

It would provide three times the bandwidth of the individual links.

*** It would allow adding more VLANs without requiring more cabling or switch ports.

7

A new host needs to be connected to VLAN 1. Router RA is attached to the VTP trunk and configured as shown in the output contained in the graphic. Which of the following IP addresses should be assigned to this new host?

192.168.1.1 /26

192.168.1.11 /28

*** 192.168.1.22 /28

192.168.1.33 /28

192.168.1.44 /28

192.168.1.55 /28

8
Which of the following are benefits of using VTP? (Choose three.)

*** configuration consistency across an administration domain

*** reduced complexity of managing and monitoring VLAN networks

reduced latency for forwarding broadcast frames

*** ability to trunk over mixed media networks

increased convergence ability

enhanced VLAN isolation

9
A switch in a VTP domain sends an advertisement request. What will be the response?

A configuration status reply will be issued from the closest client switch.

A three-way handshake will establish a configuration session with the VTP server.

*** Summary and subset advertisements will be sent by the VTP server.

The configuration version number will be set to zero and all switches in the domain will issue advertisements regarding the state of their VLANs.

10
By default, to which VLAN does a trunked link belong?

the first VLAN defined

the last VLAN defined

*** all VLANs

the lowest number VLAN

11

Host A sends a frame to host B over the network shown in the graphic. Each link has been labeled with a letter. On which links along the path between hosts A and B will a VLAN ID tag be included with the frame?

*** C, E

A, C, E

C, E, F

A, C, D, E

A, B, C, D, E

A, B, C, D, E, F, G

12

The switches in the diagram are connected with trunks within the same VTP management domain. Each switch is labeled with its VTP mode. A new VLAN is added to Switch3. This VLAN does not show up on the other switches. What is the reason for this?

VLANs cannot be created on transparent mode switches.

Server mode switches neither listen to nor forward VTP messages from transparent mode switches.

*** VLANs created on transparent mode switches are not included in VTP advertisements.

There are no ports assigned to the new VLAN on the other switches.

Transparent mode switches do not forward VTP advertisements.

ecco · 09-07-2006, 03:10

13
Select the items that describe VTP client mode operation. (Choose two.)

can add VLANs of local significance only

*** can only adopt VLAN management changes

can create and adopt updated VLAN management information

can only pass VLAN management information without adopting changes

can add VLANs to domain

*** cannot add VLANs

14

If trunking were not used in the network shown in the graphic, how many links would be required to carry the traffic for all the VLANs between the switches?

1

2

*** 3

4

15

The LAN devices are configured as shown in the diagram. Why are Host1 and Host2 unable to communicate?

No VTP domain has been configured.

A router is needed to forward traffic between the VLANs.

The switch does not have an entry in its CAM table for Host2.

*** The host IP configurations are on different networks.

The ports on each VLAN must be grouped together on the switch.

16
What should be done before moving a Catalyst switch to a new VTP management domain? (Choose three.)

*** Verify that the new switch has a lower configuration revision number than the other switches in the domain.

Reset the VTP counters to allow the switch to synchronize with the other switches in the domain.

Download the VTP database from the VTP server in the new domain.

Configure the VTP server in the domain to recognize the BID of the new switch.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

*** Select the correct VTP mode and version.

*** Configure the switch with the name of the new management domain.

17

Which statements describe the network design shown in the graphic? (Choose three.)

*** This design will not scale easily.

This design exceeds the maximum number of VLANs that can be attached to a switch.

*** Devices on the different VLANs can communicate through the router.

This design requires the use of the ISL or 802.1q protocol on the links between the switch and the router.

*** This design uses more switch and router ports than are necessary.

The router merges the VLANs into a single broadcast domain.

18
How do devices on VLANs communicate? (Choose two.)

Devices on different VLANs communicate through VTP.

*** Devices on different VLANs communicate through routers.

Devices on different VLANs communicate over a trunk link between switches.

Devices on the same VLAN communicate through a router.

*** Devices on the same VLAN communicate through Layer 2 switches.

19
What will prevent VLAN information from being overwritten when a switch is moved from one VTP management domain to another?

configuring the new switch to operate in client mode

configuring the correct VTP version on the new switch

connecting the new switch directly to a server mode switch to update the VTP database

*** resetting the configuration revision number of the new switch

20
What does a client mode switch in a VTP management domain do when it receives a summary advertisement with a revision number higher than its current revision number?

It suspends forwarding until a subset advertisement update arrives.

*** It issues an advertisement request for new VLAN information.

It increments the revision number and forwards it to other switches.

It deletes the VLANs not included in the summary advertisement.

It issues summary advertisements to advise other switches of status changes.

21
Which devices can be connected to a VLAN trunk? (Choose three.)

*** a switch

a hub

*** a router

*** a server with a special NIC

a CSU/DSU

a repeater

22
The network administrator has configured the mode of switch port 0/5 to trunk. Which additional command needs to be entered before trunking will work on this port?

Switch(config)# switchport 0/5 encapsulation trunk

Switch(config)# switchport encapsulation isl

*** Switch(config-if)# switchport trunk encapsulation dot1q

Switch(config-if)# switchport encapsulation capability trunk

23
Which of the following statements describe VTP transparent mode operation? (Choose two.)

Transparent mode switches can create VLAN management information.

*** Transparent mode switches can add VLANs of local significance only.

*** Transparent mode switches pass VLAN management information that they receive to other switches.

Transparent mode switches can adopt VLAN management changes received from other switches.

Transparent mode switches send out updates informing other switches about changes in the status of their VLANs.

Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

24
A router has two serial interfaces and two FastEthernet interfaces. It needs to connect to a wide area link to the main office and to four VLANs in the local network. How can this be accomplished in the most efficient manner?

*** Connect a trunked uplink from the switch to a router FastEthernet interface and create logical subinterfaces for each VLAN.

Use a hub to connect the four VLANS with a FastEthernet interface on the router.

Two additional FastEthernet interfaces are required to interconnect the VLANs.

Use serial to FastEthernet transceivers to connect two of the VLANs to the router. Attach the other two VLANs directly to the available FastEthernet ports.

Add a second router to handle the inter-VLAN traffic.

ecco · 09-07-2006, 03:12

ne yazıkki yok

ecco · 09-07-2006, 03:14

1
Which of the following describes the roles of devices in a WAN? (Choose three.)

*** A CSU/DSU terminates a digital local loop.

A modem terminates a digital local loop.

A CSU/DSU terminates an analog local loop.

*** A modem terminates an analog local loop.

*** A router is commonly considered a DTE device.

A router is commonly considered a DCE device.

2
What value in the address field of a Frame Relay header identifies the destination of the frame?

CIR

DE

*** DLCI

ISDN

FRAD

PVC

3

The serial PPP link between the Left and Right routers is configured as shown in the diagram. Which configuration issue explains why the link is unable to establish a PPP session?

The IP addresses must be on different subnets.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

*** The usernames are misconfigured.

The passwords must be different for the CHAP authentication.

The clock rate must be 56000.

The clock rate is configured on the wrong end of the link.

Interface serial 0/0 on Left must connect to interface serial 0/1 on Right.

4
The output of the show interfaces serial 0/0 command for a frame-relay connection indicates that the serial line is up but the line protocol is down. What are possible causes for this? (Choose two.)

*** There is an LMI-type mismatch between the Frame Relay switch and the router.

There is no clock present on the serial interface.

The interface is shut down.

RARP is not functioning on the router.

*** The cable is disconnected.

5
Which statements are correct about the point in the network where the responsibility of the service provider ends? (Choose three.)

*** The International point is on the customer side of the network terminating unit(NTU).

*** The United States point is at the interface of the customer-provided equipment and the local loop.

The responsibility for this point is controlled by IANA.

*** The point is called the demarcation point.

The point is typically located at the service provider's central office.

The point is located between the customer's local area networks.

6
While prototyping an internetwork in the corporate lab, a network administrator is testing a serial link between serial 0/0 interfaces on two routers. The labels on the serial cable ends have been damaged and are unreadable. What command can be issued to determine which router is connected to the DCE cable end?

show interfaces serial 0/0

show version

*** show controllers serial 0/0

show protocols serial 0/0

show status serial 0/0

7

A network technician determines DHCP clients are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the graphic, what is the most likely problem?

The DHCP server service is not enabled.

The inside interface for DCHP is not defined.

*** The DHCP pool is not bound to the interface.

The pool does not have a default router defined for the clients.

All the host addresses have been excluded from the DHCP pool.

8
A technician enters the interface serial 0/0.1 multipoint command when configuring a router. What effect will the multipoint keyword have in this configuration? (Choose two.)

*** Split-horizon issues will need to be resolved for this network if RIP is the routing protocol.

A subinterface will be defined for each PVC.

*** All the participating interfaces of remote routers will be configured in the same subnet.

A single DLCI will be used to define all the PVCs to the remote routers.

An IP address will need to be configured on the main interface.

9
When configuring a Frame Relay connection, when should a static Frame Relay map be used? (Choose two.)

when the remote router is a non-Cisco router

*** when the remote router does not support Inverse ARP

when the local router is using IOS Release 11.1 or earlier

*** when broadcast traffic and multicast traffic over the PVC must be controlled

when globally significant rather than locally significant DLCIs are being used

10

Which router command would be used to associate a Layer 2 address with the corresponding Layer 3 address in the internetwork in the diagram?

RouterA(config-if)#frame-relay pvc 100 192.168.15.2

RouterA(config-if)#dialer-map ip 192.168.15.1 100 broadcast

*** RouterA(config-if)#frame-relay map ip 192.168.15.2 100 broadcast
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

RouterA (config-if)#dialer-map 192.168.15.1 101 serial 0 broadcast

RouterA (config-if)#frame-relay dlci 101 192.168.15.1 broadcast

RouterA (config-if)#dialer-map 192.168.15.1 inverse-arp broadcast

11
Which of the following ISDN protocols is responsible for call setup and call teardown?

*** ITU-T Q.921

ITU-T Q.931

ITU-T I.430

ITU-T I.431

12
What are two ways to resolve split-horizon issues in a Frame Relay network? (Choose two.)

*** create a full-mesh topology

disable Inverse ARP

*** use point-to-point subinterfaces

use multipoint subinterfaces

remove the broadcast keyword from the frame-relay map command

13

What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco 806 broadband router?

defines which addresses are allowed out of the router

*** defines which addresses are allowed into the router
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

defines which addresses can be translated

defines which addresses are assigned to a NAT pool

14

A system administrator is unable to ping the Serial0/0 interface of RouterB from RouterA. During the troubleshooting process, the following facts are established:
- IP addressing and subnet masks are correcct.
- RouterA is a Cisco router and RouterB is a router from another vendor.
- RouterA is configured with the default enncapsulation.
- The serial interfaces on both routers aree up.
- The protocol is down on the serial interffaces of both routers.

What should the administrator do to solve the problem?

Add a clock rate on RouterA.

Enable the serial interface on RouterB.

*** Change the encapsulation on both routers to PPP.

Connect the serial cable to the correct interface on RouterB.

Use the correct serial cable to attach the CSU/DSU to RouterB.

15
An ISDN circuit from a branch office is remaining connected to the regional office. A network administrator determines a user has initiated a continuous ping from a desktop computer to the regional office. Which configuration change would allow the ISDN circuit to disconnect during any attempts to ping, while otherwise functioning properly?

change DDR from legacy to dialer profiles

remove the dialer list statement from the configuration

*** change the dialer list to exclude ICMP as interesting

disable inverse ARP

16
Below is a list of DDR steps. Which of the following identifies the proper order of DDR?

1 - dial number is looked up
2 - interesting traffic triggers DDR
3 - route to destination is determined
4 - call is made

1,2,3,4

1,3,2,4

2,3,1,4

2,1,3,4

*** 3,2,1,4

3,1,2,4

17
Which protocol should be chosen to support WAN connectivity in a multi-vendor system and provide strong security through authentication?

NAT with DHCP

Frame Relay

HDLC with encryption

HDLC with CHAP

PPP with PAP

*** PPP with CHAP

18
Which of the following are valid steps for a basic ISDN BRI configuration? (Choose two.)

create subinterfaces

define the LMI type

*** set the SPIDs if required by the ISDN switch

set the interface DLCI

*** set the switch type

specify the encapsulation as either Cisco or IETF

19
A branch office reports excessive connect time charges for an ISDN circuit used to connect to the regional office. Upon investigation of this issue, it is discovered that when an ISDN connection is initiated to the regional office it remains connected for an excessive amount of time. Which of the following configuration changes could be made to DDR on the router to reduce these connect time charges?

use PPP multilink

lower idle timer setting

use CHAP authentication

*** change DDR from legacy to dialer profiles

20
A network administrator is having difficulty in establishing a serial link between a Cisco router and a router from another vendor. Both routers are configured for HDLC encapsulation. Which statements are true regarding this configuration? (Choose two.)

*** The Cisco HDLC frame uses a proprietary "Type" field that may not be compatible with equipment of other vendors.

HDLC requires a clock rate to be configured on the routers at both ends of the serial link.

*** PPP encapsulation is recommended for serial links between equipment from multiple vendors.

Usernames must be configured at both ends of the HDLC serial link.

The HDLC vendor type must be enabled on the Cisco router.

There is a mismatch in the HDLC authentication password configurations.

ecco · 09-07-2006, 03:17

21

Given the partial router configuration in the graphic, why does the workstation with the IP address 192.168.1.153/28 fail to access the Internet? (Choose two.)

*** The NAT inside interfaces are not configured properly.

The NAT outside interface is not configured properly.

*** The router is not properly configured to use the access control list for NAT.

The NAT pool is not properly configured to use routable outside addresses.

The access control list does not include the IP address 192.168.1.153/28 to access the Internet.

22

The serial PPP link between the Left and Right routers is configured as shown in the diagram. Which configuration issue will prevent IP traffic from crossing this link?

The passwords must be different for the CHAP authentication.

The usernames are misconfigured.

The clock rate must be 56000.

The clock rate is configured on the wrong end of the link.

*** The IP addresses must be on the same subnet.

Interface serial 0/0 on Left must connect to interface serial 0/1 on Right.

23
What causes a DDR call to be placed?

dial string

DLCI

idle time out

*** interesting traffic

PVC

24
Which two layers of the OSI model are described by WAN standards?

Application Layer, Physical Layer

*** Data Link Layer, Physical Layer

Data Link Layer, Transport Layer

Physical Layer, Network Layer

25

A technician is testing RouterA in the graphic. What is the condition of the circuit?

The routers are configured for different encapsulations.

*** The clock rate is not properly configured on the routers.

The circuit from WAN provider has failed.

Authentication is not properly configured on the routers.

The circuit is functioning properly.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

26
A network administrator must provide WAN connectivity between a central office and three remote sites: Orlando, Atlanta, and Phoenix. The Orlando and Atlanta remote offices receive sales orders and transmit shipping confirmations to the Central office consistently throughout the day. The Phoenix remote office consists of one salesperson traveling through the southwest territory. The salesperson occasionally needs to connect to the Central office for e-mail access. How should the network administrator connect the remote sites to the Central office? (Choose two.)
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

*** Connect to the Atlanta and Orlando remote offices with Frame Relay connections.

Connect to the Atlanta and Orlando remote offices with ISDN connections.

Connect to the Atlanta and Orlando remote offices with POTS dial-up connections.

Connect to the Phoenix remote office with a Frame Relay connection.

*** Connect to the Phoenix remote office with a POTS dial-up connection.

27
When a Frame Relay switch detects an excessive buildup of frames in its queue, which of the following may occur? (Choose two.)

*** Frames with the DE bit set are dropped from the switch queue.
Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375

Frames with the FECN and BECN bits set are dropped from the switch queue.

Frames in excess of the CIR are not accepted by the switch.

The switch sets the FECN bit on all frames it places on the congested link and sets the BECN bit on all frames it receives on the congested link.

*** The switch sets the FECN bit on all frames it receives on the congested link and sets the BECN bit on all frames it places on the congested link.

28

A system administrator is troubleshooting a connectivity issue between two routers in a new installation. The administrator enters the debug ppp authentication command on the WHSE router. The graphic shows a part of the output received. From this output, what is the most likely cause of this connectivity issue?

There is not a route to the remote router.

The ISDN circuit on the remote router has failed.

*** The username/password was not properly configured on the WHSE router.

The remote router has a different authentication protocol configured.

29
What does the output of the show frame-relay map command shown below represent? (Choose two.)
Serial 0 (up): ip 172.30.151.4 dlci 122, dynamic, broadcast, status defined, active

*** 172.30.151.4 represents the IP address of the remote router.

172.30.151.4 represents the IP address of the local serial interface.

DLCI 122 represents the interface of the remote router.

broadcast indicates that a dynamic routing protocol such as RIP v1 can send packets across this PVC.

*** dynamic indicates that a dynamic routing protocol is enabled for this connection.

active indicates that the ARP process is working.

30
What does the status inactive indicate in the output of the show frame-relay pvc command?

*** The DLCI is programmed in the switch but is not usable.

The DLCI was formerly programmed in the switch but is no longer there.

The DLCI is usable but has little activity.

The DLCI has been renamed for that PVC.

31
Which of the following IP addresses are defined by RFC 1918 as private addresses? (Choose three.)

*** 192.168.146.0/22

172.10.25.0/16

*** 172.31.0.0/16

20.0.0.0/8

*** 10.172.92.8/29

32
After configuring a dialup ISDN circuit, a network associate begins testing the dialup connection. When attempting to ping a host on the remote network, the local router does not attempt to dial the remote access server. Which of the following are possible errors in this configuration? (Choose three.)

PPP authentication is not properly configured.

*** No dialer map is configured.

The ISDN circuit connected to the remote access server is busy.

*** No interesting traffic is defined.

No route is determined to the remote network.

*** A wrong number is configured in the dial string.

33
Two routers are connected through a Frame Relay, point-to-point PVC. The remote router is from a vendor other than Cisco. Which interface command is required to configure the link between the Cisco router and the other router?

frame-relay pvc multipoint

frame-relay pvc point-to-point

encapsulation frame-relay cisco

*** encapsulation frame-relay ietf

frame-relay lmi-type ansi

34
Which circuit-switched WAN technology is often used to provide a backup for a leased line and additional capacity during peak usage times?

X.25

DSL

*** ISDN

cable modem

35
After the ISDN BRI interface is configured, which command can be used to verify that the router is communicating correctly with the ISDN switch?

show dialer

show isdn status

*** show interfaces bri0/0:1

show interfaces serial0/0.1

36
A system administrator needs to configure the regional office with ISDN for DDR connections to three remote sites. Each remote site requires different IP subnets, different encapsulations, and different authentication methods. The sites will not be connected at the same time. The company would like to accomplish this in the most cost effective manner. What method can the system administrator use to accomplish this task using the fewest B channels?

Install and configure a PRI.

Install and configure a BRI interface with separate SPIDs for each remote site.

Install and configure a BRI with multiple switch types in global configuration.

*** Install and configure a BRI using dialer profiles.

Install and configure a separate BRI for each remote site.

37
A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time?

Configure static NAT for all ten users.

*** Configure dynamic NAT for ten users.

Configure dynamic NAT with PAT.

Configure DHCP and static NAT.

What the administrator wants to do cannot be done.

38
Which of the following are characteristics of Frame Relay? (Choose two.)

circuit-switched

*** connection oriented

OSI Layer 3

*** packet-switched

reliable

39
Which of the following is the order for the three phases of establishing a PPP serial link with authentication?

authentication, link-establishment, network layer protocols

authentication, network layer protocols, link-establishment

network layer protocols, link-establishment, authentication

network layer protocols, authentication, link-establishment

*** link-establishment, authentication, network layer protocols

link-establishment, network layer protocols, authentication

09-07-2006, 00:34	#1
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	cisco v 3.1 ccna sınavı semester 3 full sorular ve cevapları cisco v 3.1 ccna sınavı semester 3 full sorular ve cevapları işte burda Düzenleyen ecco : 09-07-2006 at 00:36.

09-07-2006, 02:52	#2
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 1.sınav 1 Which of the following is considered a limitation of RIP v1? * RIP v1 does not send subnet mask information in its updates. RIP v1 is not widely supported by networking hardware vendors. RIP v1 consumes excessive bandwidth by multicasting routing updates using a Class D address. RIP v1 requires enhanced router processors and extra RAM to function effectively. RIP v1 does not support load balancing across equal-cost paths. RIP v1 authentication is complicated and time-consuming to configure. 2 The subnet 192.168.32.16/28 has been selected to be further subnetted to support point-to-point serial links. What is the maximum number of serial links that this plan can support? 2 3 3 if ip subnet-zero is enabled Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * 4 6 Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 8 3 What is the default network mask for a Class B address? 255.0.0.0 * 255.255.0.0 255.255.255.0 255.255.255.255 4 A new network is to be configured on a router. Which of the following tasks must be completed to configure this interface and implement dynamic IP routing for the new network? (Choose three.) * Select the routing protocol to be configured. * Assign an IP address and subnet mask to the interface. Update the ip host configuration information with the device name and new interface IP address. * Configure the routing protocol with the new network IP address. Configure the routing protocol with the new interface IP address and subnet mask. Configure the routing protocol in use on all other enterprise routers with the new network information. 5 Which command must the administrator execute to disable the capability to use subnets that include the network address of the unsubnetted network? Router(config)# no ip classless Router(config)# no ip zero subnet * Router(config)# no ip subnet-zero Router(config)# no ip zero-subnet Router(config)# no subnet-zero 6 Which of the following problems does VLSM help to alleviate? * the shortage of IP addresses the difficulty of assigning static IP addresses to hosts in large enterprises the complexity of implementing advanced routing protocols such as OSPF and EIGRP the shortage of network administrators qualified in the use of RIP v1 and IGRP 7 Which of the following are contained in the routing updates of classless routing protocols? (Choose two.) * 32-bit address next hop router interface * subnet mask unicast host address Layer 2 address 8 An additional subnet is required for a new Ethernet link between Router1 and Router2 as shown in the diagram. Which of the following subnet addresses can be configured in this network to provide a maximum of 14 useable addresses for this link while wasting the fewest addresses? 192.1.1.16/26 192.1.1.96/28 192.1.1.160/28 192.1.1.196/27 * 192.1.1.224/28 192.1.1.240/28 9 How often does RIP v1 send routing table updates, by default? * every 30 seconds every 45 seconds every 60 seconds every 90 seconds 10 What does VLSM allow a network administrator to do? utilize one subnet mask throughout an autonomous system * utilize multiple subnet masks in the same IP address space utilize IGRP as the routing protocol in an entire autonomous system utilize multiple routing protocols within an autonomous system 11 Which subnet mask is represented by the /21 notation? 255.255.224.0 * 255.255.248.0 255.255.252.0 255.255.240.0 12 Router1 and Router2 shown in the topology have been configured with the no ip subnet-zero command. Which of the following valid VLSM network numbers could be used for the serial link between Router1 and Router2? (Choose two.) 192.168.1.0/30 * 192.168.1.4/30 * 192.168.1.8/30 192.168.1.96/30 192.168.1.138/30 192.168.1.190/30 13 A Class C network address has been subnetted into eight subnetworks. Using VLSM, the last subnet will be divided into eight smaller subnetworks. What bit mask must be used to create eight smaller subnetworks, each having two usable host addresses? /26 /27 /28 /29 * /30 /31 14 The routers in the diagram use the subnet assignments shown. What is the most efficient route summary that can be configured on Router3 to advertise the internal networks to the cloud? 192.1.1.0/26 and 192.1.1.64/27 192.1.1.128/25 192.1.1.0/23 and 192.1.1.64/23 192.1.1.0/24 * 192.1.1.0/25 192.1.1.0/24 and 192.1.1.64/24 15 How does a router know of paths to destination networks? (Choose two.) inspection of the destination IP address in data packets ARP requests from connected routers * manual configuration of routes * updates from other routers DHCP information broadcasts updates from the SMTP management information base 16 The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology? The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork. * The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the address for Serial0 of Router2. The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3. 17 A Class C address has been assigned for use in the network shown in the graphic. Using VLSM, which bit mask should be used to provide for the number of host addresses required on Router A, while wasting the fewest addresses? /31 /30 /29 /28 * /27 /26 18 Which command would a network administrator use to determine if the routers in an enterprise have learned about a newly added network? router# show ip address * router# show ip route router# show ip networks router# show ip interface brief router# debug ip protocol router# debug rip update 19 Refer to the network shown. How will Router1 summarize and advertise the four networks attached to its Ethernet ports? 172.16.16.0/20 172.16.19.0/20 172.16.16.0/20 and 172.16.19.0/20 * 172.16.16.0/22 172.16.18.0/24 172.16.0.0/24 20 In the network shown in the graphic, three bits were borrowed from the host portion of a Class C address. How many valid host addresses will be unused on the three point-to-point links combined if VLSM is not used? 3 4 12 36 * 84 180 21 Which of the following statements are true regarding RIP v1 and v2? (Choose three.) * Both RIP versions use hop count. Both RIP versions can provide authentication of update sources. * Both RIP versions use 16 hops as a metric for infinite distance. RIP v1 uses split horizon to prevent routing loops while RIP v2 does not. RIP v1 uses hold-down times to prevent routing loops while RIP v2 does not. * RIP v1 broadcasts routing table updates, while RIP v2 multicasts its updates. 22 What is the purpose of the network command used in the configuration of the RIP routing protocol? It specifies RIP v2 as the routing protocol. It enables the use of VLSM. It specifies the fastest path to the destination route. It specifies which interfaces will exchange RIP routing updates. * It activates RIP for all routes that exist within the enterprise network. 23 Refer to the graphic. Which command will enter a static route to network 192.168.19.0 from router C? C(config)# ip route 192.168.19.0 192.168.17.1 C(config)# ip static-route 192.168.19.0/24 192.168.17.2 C(config)# ip route 192.168.17.1 255.255.255.0 192.168.19.0 * C(config)# ip route 192.168.19.0 255.255.255.0 192.168.17.1 C(config)# ip route 192.168.19.0 0.0.0.0 192.168.17.2 C(config)# ip default-route 192.168.17.2 255.255.255.0 192.168.19.0

09-07-2006, 02:55	#3
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 2.sınav part1 1 What does OSPF use to calculate the cost to a destination network? * bandwidth bandwidth and hop count bandwidth and reliability bandwidth, load, and reliablity 2 A network administrator has configured a default route on Router_A but it is not being shared with adjacent Router_B and the other routers in the OSPF area. Which command will save the administrator the time and trouble of configuring this default route on Router_B and all of the other routers in the OSPF area? Router_A(config-router)# ospf redistribute default-route Router_B(config-router)# ospf redistribute default-route * Router_A(config-router)# default-information originate Router_B(config-router)# default-information originate Router_A(config-router)# ip ospf update-default Router_B(config-router)# ip ospf update-default 3 What are the benefits of the hierarchical design approach that is used in large OSPF networks? (Choose three.) * reduction of routing overhead increased routing overhead * faster convergence slower convergence Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 distribution of network instability to all areas of the network * isolation of network instability to one area of the network 4 Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.) * network address loopback address autonomous system number subnet mask * wildcard mask * area ID 5 Because of security concerns, a network administrator wants to set up authentication between two routers. Which of the following commands will configure Router_A to trust Router_B with a clear text password of apollo? Router_A(config-if)# ospf authentication-key apollo Router_A(config-if)# ip authentication-key apollo Router_A(config-if)# ip ospf authentication apollo * Router_A(config-if)# ip ospf authentication-key apollo 6 The routers in the diagram are configured as shown. The loopback interface on router R1 is labeled as lo0. All OSPF priorities are set to the default except for Ethernet0 of router R2, which has an OSPF priority of 2. What will be the result of the OSPF DR/BDR elections on the 192.1.1.0 network? (Choose two.) R1 will be the DR R1 will be the BDR * R2 will be the DR R2 will be the BDR R3 will be the DR * R3 will be the BDR 7 What information can be obtained from the output of the show ip ospf interface command? (Choose three.) link-state age intervals * timer intervals * router ID number link-state update intervals * neighbor adjacencies 8 Which command sequence will enable OSPF in the backbone area for the two Ethernet links on RouterA? RouterA(config)# router ospf 1 RouterA(config-router)# network 172.16.4.0 0.0.1.255 area 1 * RouterA(config)# router ospf 10 * RouterA(config-router)# network 172.16.4.0 0.0.0.255 area 0 * RouterA(config-router)# network 172.16.5.0 0.0.0.255 area 0 RouterA(config)# router ospf 10 RouterA(config-router)# area 0 network 172.16.4.0 0.0.1.255 RouterA(config)# router ospf 0 RouterA(config-route)# network 172.16.4.0 0.0.255.255 area 0 RouterA(config)# router ospf 0 RouterA(config-router)# network 172.16.4.0 255.255.255.0 RouterA(config-router)# network 172.16.5.0 255.255.255.0 RouterA(config)# router ospf 1 RouterA(config-router)# network 172.16.4.0 255.255.254.0 area 0 9 Which of the following are disadvantages of link-state routing? (Choose three.) * Link-state protocols require careful network design. Link-state protocols are prone to routing loops. Link-state hello updates can cause broadcast flooding. * Link-state protocols place significant demands on router processors and memory resources. * Link-state protocols require a knowledgeable network administrator. Link-state protocols do not support Variable Length Subnet Masking. 10 What does OSPF use to reduce the number of exchanges of routing information in networks where large numbers of neighbors are present? (Choose two.) root router backup root router domain router backup domain router * designated router * backup designated router 11 What speeds up convergence in a network using link-state routing? Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * updates triggered by network changes updates sent at regular intervals updates sent only to directly connected neighbors updates that include complete routing tables 12 Why is it difficult for routing loops to occur in networks that use link-state routing? Each router builds a simple view of the network based on hop count. Routers flood the network with LSAs to discover routing loops. * Each router builds a complete and synchronized view of the network. Routers use hold-down timers to prevent routing loops.

09-07-2006, 02:56	#4
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 2.sınav part2 13 What will be the result of the DR and BDR elections for this single area OSPF network? (Choose three.) HQ will be DR for 10.4.0.0/16. * Router A will be DR for 10.4.0.0/16. * HQ will be BDR for 10.4.0.0/16. Router A will be DR for 10.5.0.0/16. * Remote will be DR for 10.5.0.0/16. Remote will be BDR for 10.5.0.0/16. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 14 Which router is the root of an SPF tree? border router nearest neighboring router * local router trunk router, as determined by the SPF algorithm 15 Refer to the network shown in the diagram. Which command sequence on RouterB will redistribute a Gateway of Last Resort to the other routers in OSPF area 0? RouterB(config)# router ospf 10 RouterB(config-router)# gateway-of-last-resort 172.16.6.6 RouterB(config)# ip route 0.0.0.0 0.0.0.0 serial 0 * RouterB(config)# ip route 0.0.0.0 0.0.0.0 172.16.6.6 * RouterB(config)# router ospf 10 * RouterB(config-router)# default-information originate RouterB(config)# router ospf 10 RouterB(config-router)# default network 172.16.6.6 0.0.0.3 area 0 RouterB(config)# ip route 0.0.0.0 0.0.0.0 172.16.6.6 RouterB(config)# ip default-route 0.0.0.0 0.0.0.0 172.16.6.6 RouterB(config)# router ospf 10 RouterB(config-router)# redistribute ip default-route 16 Refer to the network diagram. When establishing adjacency relationships, which IP address would router A use to send hello packets to router B? 0.0.0.0 10.11.0.1 10.11.0.2 * 224.0.0.5 224.0.0.6 224.0.0.255 17 Which router command will display the interface priority value and other key information for the OSPF configuration of the serial 0 interface? router# show ospf serial 0 router# show interface serial 0 OSPF router# show ip interface serial 0 * router# show ip ospf interface serial 0 18 Why would a network administrator choose to enable MD5 authentication for OSPF exchanges? (Choose three.) * to prevent OSPF packets from being decoded by unauthorized individuals using packet sniffers to reduce OSPF information exchange overhead to assure that OSPF routing information takes priority over RIP or IGRP updates to encrypt routing tables to prevent unauthorized viewing * to ensure that routing information comes from a valid source * to prevent routing information from being falsified 19 What factors should be considered when modifying OSPF hello interval and dead interval timers on a link? (Choose two.) The dead interval timer value must be kept at four times the hello interval timer value. Nonbroadcast networks should have shorter hello intervals than broadcast networks. * These intervals should not be changed unless justified by improved network performance. * All routers exchanging OSPF information over the link must have the same interval timer values. Any change in these interval timer values will apply to all interfaces on the router. Dead interval timer values should be made shorter on the designated router to improve network response. 20 RouterA, RouterB, and RouterC in the diagram are running OSPF on their Ethernet interfaces. Loopback interfaces (Lo 0) are configured as shown. What happens when RouterD is added to the network? RouterB takes over as DR and RouterD becomes the BDR. RouterD becomes the BDR and RouterA remains the DR. RouterD becomes the DR and RouterA becomes the BDR. RouterC acts as the DR until the election process is complete. RouterD becomes the DR and RouterB remains the BDR. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * There is no change in the DR or BDR until either current DR or BDR goes down. 21 Which of the following should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose three.) * OSPF interval timers mismatch gateway of last resort not redistributed * interface network type mismatch no loopback interface configured administrative distance mismatch * inconsistent authentication configuration 22 In which types of networks are OSPF DR elections necessary? (Choose two.) point-to-point point-to-multipoint * broadcast multiaccess * nonbroadcast multiaccess 23 Assuming that the network has converged, which of the following is true regarding the link-state database held by each router that is in the same OSPF area. ? The link-state database is stored in a designated router and is accessed by each router in the area as needed. * Each router in an OSPF area has a link-state database containing the same status information. Each router has a different link-state database depending on its location within the network. The link-state database in each router only contains information about adjacent routers and the status of their links. 24 How can the OSPF cost for a link be established? (Choose two.) It is set to 1544 by default for all OSPF interfaces. * It can be set with the ip ospf cost command. The configured loopback addresses map to link costs. It is calculated proportionally to observed throughput capacity of the router. *** It may be calculated using the formula 108/bandwidth.

09-07-2006, 02:57	#5
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 3.sınav 1 Why is it important to create standards for network consistency? (Choose three.) *** reduces network complexity * increases unplanned downtime *** limits unplanned downtime * increases bandwidth by regulating networking performance *** limits events that may impact network performance * 2 A telnet session can be established when using the IP address of a router but not the name of the router. Which of the following is the most likely cause of the problem? *** an incorrect host table entry * an incorrect ARP table entry an incorrect routing table entry an incorrect protocol configured an incorrect subnet mask 3 The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.) Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 Sydney(config-if)# ip address 201.100.53.2 255.255.255.0 Sydney(config-if)# no shutdown * *** Sydney(config-if)# ip address 201.100.53.1 255.255.255.224 * *** Sydney(config-if)# clock rate 56000 * Sydney(config-if)# ip host Melbourne 201.100.53.2 4 Which commands display information about the IOS or configuration files stored in router memory? (Choose three.) Router# show ram *** Router# show flash * Router# show hosts Router# show history *** Router# show version * *** Router# show startup-config * 5 Select the interface descriptions that provide the most appropriate information. (Choose two.) circuit number *** host IP address * *** telnet password * number of hops between routers purpose and location of the interface 6 Select the commands necessary to remove any existing configuration on a router. (Choose two.) delete flash *** erase startup-config * *** erase running-config * restart reload delete NVRAM 7 Router names are associated with IP addresses. What is the name of the table that is created by this association? IP table SAP table ARP table MAC table *** HOST table * RARP table 8 Select the commands that will store the current configuration file to a network TFTP server? (Choose two.) Router# copy run tftp Router# copy tftp run *** Router# copy running-config tftp * *** Router# copy tftp running-config * Router(config)# copy running-config tftp Router(config)# copy tftp running-config 9 Which statements are true regarding the recommended use of login banners? (Choose two.) *** They should be used to display information regarding system changes or maintenance. * *** They should be used to display warnings to unauthorized users. * They should be used to display welcome messages prior to login. They should be seen only by system administrators. They should provide confirmation of incoming IP addresses. 10 What is the effect of the command ip host HQ 192.1.1.1? permits a ping to 192.1.1.1 with the command ping HQ assigns the description HQ to the interface with the ip address 192.1.1.1 renames the router as HQ defines a static route to the host 192.1.1.1 *** configures the remote device HQ with the ip address of 192.1.1.1 * 11 What are the default settings for a serial interface? (Choose three.) *** DTE * DCE *** shutdown * *** no IP address * clock rate 56000 encapsulation ARPA 12 What will be the response from the router after the command, "router(config)# hostname portsmouth" is entered? portsmouth# *** portsmouth(config)# * invalid input detected router(config-host)# hostname = portsmouth portsmouth# ? command not recognized router(config)# 13 A network administrator wants to assure that any password that permits access to the privileged EXEC mode is not shown in plain text in the configuration files. Which commands will accomplish this task? (Choose two.) Router(config)#enable cisco secret Router(config)#enable cisco *** Router(config)#service password-encryption * *** Router(config)#enable secret cisco * Router(config)#encrypt-all cisco Router(config)#service encryption-password 14 Which command sequence will permit access to all five router virtual terminal lines with a password of cisco? Router(config-line)#config telnet Router(config-line)# line vty 0 5 Router(config-line)# password cisco Router(config)# line vty 0 4 Router(config)# password cisco *** Router(config)# line vty 0 4* Router(config-line)# password cisco Router(config-line)# login Router(config-line)# config telnet Router(config-line)# password cisco Router(config-line)# sessions 0 4 15 An IP network is to be added to a router Ethernet interface. What steps must be performed to configure this interface to allow connectivity to the hosts on this LAN? (Choose two.) *** Enter the command no shutdown. * A password must be set on the interface. The interface DCE clock rate must be set. The interface must be configured for virtual terminal access. *** The interface must be configured with an IP address and subnet mask. * Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 The router must be put in setup mode in order for the interface to be configured. 16 What is the default state of the interfaces on a router? up, line protocol down *** down, line protocol down * adminstratively down, line protocol down up, line protocol up 17 Which are valid router prompts? (Choose three.) Router(privileged)# *** Router(config)# * Router(command)# *** Router(config-router)# * *** Router(config-if)# * Router(exec)# 18 Select the correct sequence of commands that will configure "Engineering LAN" as the interface description on the Ethernet0 interface. 1)Router# configure terminal Router(config)# interface e0 description Engineering LAN *** 2)Router# configure terminal* Router(config)# interface e0 Router(config-if)# description Engineering LAN 3)Router# configure terminal Router(config)# interface e0 Router(config-if)# interface description Engineering LAN 4)Router# configure terminal Router(config)# description Engineering LAN 19 Select the recommended locations to save a running-config file. (Choose three.) all network hosts *** network server * *** floppy disk * *** TFTP server * server that is not on the network 20 Which command turns on a router interface? Router(config-if)# enable Router(config-if)# no down Router(config-if)# s0 active Router(config-if)# interface up *** Router(config-if)# no shutdown * 21 Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.) *** VTY interface * *** console interface * Ethernet interface secret EXEC mode *** privileged EXEC mode * router configuration mode 22 What must be configured to establish a serial link between two routers that are directly connected? a clock rate on the DTE interface a no clock rate command on the DTE interface no configuration is required *** a clock rate on the DCE interface *

09-07-2006, 02:58	#6
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 4.sınav 1 Which attribute is used by a bridge to make forwarding decisions? source IP address source MAC address destination IP address * destination MAC address Layer 4-7 protocol address 2 What is the effect of adding additional hosts to a half-duplex Ethernet network? (Choose three.) * collisions increase collisions decrease * jam signals increase jam signals decrease * throughput decreases throughput increases 3 How does an Ethernet bridge handle an incoming frame? (Choose three.) The source MAC address and input interface pair are added to the bridging table. * The destination MAC address and input interface pair are added to the bridging table. If no match to the destination MAC address is found in the bridging table, the frame is discarded. * If no match to the destination MAC address is found in the bridging table, the frame is flooded out all other interfaces. * If a match to the destination MAC address is found in the bridging table, the frame is forwarded out the associated interface. If a match to the source MAC address is found in the bridging table, the frame is forwarded to all ports. 4 Which of the following is used to build a switching table? source IP addresses destination IP addresses destination MAC addresses * source MAC addresses 5 After a collision occurs on a half-duplex Ethernet network, how does a transmitting host proceed? (Choose two.) It does not stop transmitting. * It listens to determine if the network is in use before attempting to retransmit. It resumes transmitting while the jam signal clears the wire. * It resumes transmitting based on the NIC back-off algorithm. It will take priority and be the first host to transmit after the collision. 6 Which statements describe asymmetric switching? (Choose three.) It uses data compression algorithms to manage higher bandwidth interfaces. * It is often used to provide high bandwidth uplinks for a number of lower bandwidth client interfaces. * It provides connections between network segments that operate at different bandwidths. It uses cut-through forwarding when going from a lower bandwidth to a higher bandwidth interface. It is used to provide more bandwidth to network clients than to backbone or server links. * It may require buffering frames before forwarding to the destination interface. 7 Which statements are true concerning the shared memory buffering used by an Ethernet switch? (Choose two.) * Frames are processed through a single queue. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * All frames are placed in a common memory buffer. Frames are placed in a queue for the destination port. A port with a full memory buffer can cause frames for available ports to be delayed. Each switch port is statically assigned a buffer of equal size. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 8 Which statements are true regarding hubs? (Choose three.) * Hubs operate at Layer 1 of the OSI model. They create separate collision domains. * Signals are distributed through all ports. Layer 2 addresses are used to make decisions. They calculate the CRC for each frame received prior to forwarding. * Bandwidth is shared among all connected users. 9 What are the functions of routers? (Choose three.) improving network performance by increasing latency by twenty to thirty percent * segmenting broadcast domains * forwarding packets based on destination network layer addresses * segmenting collision domains forwarding packets as soon as the destination MAC address is read developing routing table entries based on source IP addresses 10 Which of the following devices use physical addresses to make forwarding decisions? (Choose two.) hub * bridge router * switch concentrator multi-port repeater 11 Which form of buffering is used by bridges? cut-through fragment-free fast-forward * store-and-forward 12 Switching may be implemented to improve the performance of which of the following networking technologies? (Choose three.) * Ethernet 10BASE-T Ethernet 10BASE2 * FDDI * Token Ring EIA-232 13 Hubs are concerned with which PDU? * bits frames packets datagrams 14 What does switch latency describe? forwarding method used by a switch time it takes for a frame to be received by a switch * improvement in network performance from using a switch time delay between when a frame enters and exits a switch increase in the size of a collision domain from using a switch 15 Where are switching tables stored in a Cisco LAN switch? ROM * CAM Flash SIMM NRAM 16 Which switching mode changes to store-and-forward mode after it detects a given number of errors? cut-through adaptive fast-forward fragment-free * adaptive cut-through 17 Which of the following is a Layer 2 broadcast address? 0.0.0.0 255.255.255.255 11:11:11:11 FF:FF:FF:FF * FF:FF:FF:FF:FF:FF 18 Refer to the graphic. Which point in the frame must be reached before it is forwarded by a switch that is using fast-forward mode? A B * C D E Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 F 19 Why does a switch have higher throughput compared to a bridge? Switching occurs in software. * Switching occurs in hardware. Switches create virtual circuits. Switches segment LANs. 20 What is the potential throughput of a 10 Mbps Ethernet connection operating in full-duplex mode? (Choose two.) 10 Mbps total * 20 Mbps total 5 Mbps TX and 5 Mbps RX * 10 Mbps TX and 10 Mbps RX 40 to 60 percent on TX and RX 21 An Ethernet switch has developed the MAC address table shown at the top of the graphic. What action will the switch take when it receives the frame shown at the bottom of the graphic? forward the frame out all interfaces forward the frame out all interfaces except Interface3 discard the frame * forward the frame out Interface1 forward the frame out Interface2 forward the frame out Interface3 22 Which of the following are true regarding the addition of switches to a network? (Choose two.) * They increase the number of collision domains. They decrease the number of collision domains. They increase the number of broadcast domains. They decrease the number of broadcast domains. * They increase the amount of bandwidth available to users. They decrease the amount of bandwidth available to users. 23 What is designed to prevent multiple devices on an Ethernet network from transmitting at the same time? synchronization clock * CSMA/CD access method token access method shared medium 24 Refer to the graphic. Which point must be reached before a frame is forwarded when the switch is using store-and-forward mode? A B C D E *** F

09-07-2006, 03:00	#7
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 5.sınav 1 Which attribute is used by a bridge to make forwarding decisions? source IP address source MAC address destination IP address * destination MAC address Layer 4-7 protocol address 2 What is the effect of adding additional hosts to a half-duplex Ethernet network? (Choose three.) * collisions increase collisions decrease * jam signals increase jam signals decrease * throughput decreases throughput increases 3 How does an Ethernet bridge handle an incoming frame? (Choose three.) The source MAC address and input interface pair are added to the bridging table. * The destination MAC address and input interface pair are added to the bridging table. If no match to the destination MAC address is found in the bridging table, the frame is discarded. * If no match to the destination MAC address is found in the bridging table, the frame is flooded out all other interfaces. * If a match to the destination MAC address is found in the bridging table, the frame is forwarded out the associated interface. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 If a match to the source MAC address is found in the bridging table, the frame is forwarded to all ports. 4 Which of the following is used to build a switching table? source IP addresses destination IP addresses destination MAC addresses * source MAC addresses 5 After a collision occurs on a half-duplex Ethernet network, how does a transmitting host proceed? (Choose two.) It does not stop transmitting. * It listens to determine if the network is in use before attempting to retransmit. It resumes transmitting while the jam signal clears the wire. * It resumes transmitting based on the NIC back-off algorithm. It will take priority and be the first host to transmit after the collision. 6 Which statements describe asymmetric switching? (Choose three.) It uses data compression algorithms to manage higher bandwidth interfaces. * It is often used to provide high bandwidth uplinks for a number of lower bandwidth client interfaces. * It provides connections between network segments that operate at different bandwidths. It uses cut-through forwarding when going from a lower bandwidth to a higher bandwidth interface. It is used to provide more bandwidth to network clients than to backbone or server links. * It may require buffering frames before forwarding to the destination interface. 7 Which statements are true concerning the shared memory buffering used by an Ethernet switch? (Choose two.) * Frames are processed through a single queue. * All frames are placed in a common memory buffer. Frames are placed in a queue for the destination port. A port with a full memory buffer can cause frames for available ports to be delayed. Each switch port is statically assigned a buffer of equal size. 8 Which statements are true regarding hubs? (Choose three.) * Hubs operate at Layer 1 of the OSI model. They create separate collision domains. * Signals are distributed through all ports. Layer 2 addresses are used to make decisions. They calculate the CRC for each frame received prior to forwarding. * Bandwidth is shared among all connected users. 9 What are the functions of routers? (Choose three.) improving network performance by increasing latency by twenty to thirty percent * segmenting broadcast domains * forwarding packets based on destination network layer addresses * segmenting collision domains forwarding packets as soon as the destination MAC address is read developing routing table entries based on source IP addresses 10 Which of the following devices use physical addresses to make forwarding decisions? (Choose two.) hub * bridge router * switch concentrator multi-port repeater 11 Which form of buffering is used by bridges? cut-through fragment-free fast-forward * store-and-forward 12 Switching may be implemented to improve the performance of which of the following networking technologies? (Choose three.) * Ethernet 10BASE-T Ethernet 10BASE2 * FDDI * Token Ring EIA-232 13 Hubs are concerned with which PDU? * bits frames packets datagrams 14 What does switch latency describe? forwarding method used by a switch time it takes for a frame to be received by a switch * improvement in network performance from using a switch time delay between when a frame enters and exits a switch increase in the size of a collision domain from using a switch 15 Where are switching tables stored in a Cisco LAN switch? ROM * CAM Flash SIMM NRAM 16 Which switching mode changes to store-and-forward mode after it detects a given number of errors? cut-through adaptive fast-forward fragment-free * adaptive cut-through 17 Which of the following is a Layer 2 broadcast address? 0.0.0.0 255.255.255.255 11:11:11:11 FF:FF:FF:FF * FF:FF:FF:FF:FF:FF 18 Refer to the graphic. Which point in the frame must be reached before it is forwarded by a switch that is using fast-forward mode? Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 A B * C D E F 19 Why does a switch have higher throughput compared to a bridge? Switching occurs in software. * Switching occurs in hardware. Switches create virtual circuits. Switches segment LANs. 20 What is the potential throughput of a 10 Mbps Ethernet connection operating in full-duplex mode? (Choose two.) 10 Mbps total * 20 Mbps total 5 Mbps TX and 5 Mbps RX * 10 Mbps TX and 10 Mbps RX 40 to 60 percent on TX and RX 21 An Ethernet switch has developed the MAC address table shown at the top of the graphic. What action will the switch take when it receives the frame shown at the bottom of the graphic? forward the frame out all interfaces forward the frame out all interfaces except Interface3 discard the frame * forward the frame out Interface1 forward the frame out Interface2 forward the frame out Interface3 22 Which of the following are true regarding the addition of switches to a network? (Choose two.) * They increase the number of collision domains. They decrease the number of collision domains. They increase the number of broadcast domains. They decrease the number of broadcast domains. * They increase the amount of bandwidth available to users. They decrease the amount of bandwidth available to users. 23 What is designed to prevent multiple devices on an Ethernet network from transmitting at the same time? synchronization clock * CSMA/CD access method token access method shared medium 24 Refer to the graphic. Which point must be reached before a frame is forwarded when the switch is using store-and-forward mode? A B C D E *** F

09-07-2006, 03:02	#8
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 6.sınav 1 Which attribute is used by a bridge to make forwarding decisions? source IP address source MAC address destination IP address * destination MAC address Layer 4-7 protocol address 2 What is the effect of adding additional hosts to a half-duplex Ethernet network? (Choose three.) * collisions increase collisions decrease * jam signals increase jam signals decrease * throughput decreases throughput increases 3 How does an Ethernet bridge handle an incoming frame? (Choose three.) The source MAC address and input interface pair are added to the bridging table. * The destination MAC address and input interface pair are added to the bridging table. If no match to the destination MAC address is found in the bridging table, the frame is discarded. * If no match to the destination MAC address is found in the bridging table, the frame is flooded out all other interfaces. * If a match to the destination MAC address is found in the bridging table, the frame is forwarded out the associated interface. If a match to the source MAC address is found in the bridging table, the frame is forwarded to all ports. 4 Which of the following is used to build a switching table? source IP addresses destination IP addresses destination MAC addresses * source MAC addresses 5 After a collision occurs on a half-duplex Ethernet network, how does a transmitting host proceed? (Choose two.) It does not stop transmitting. * It listens to determine if the network is in use before attempting to retransmit. It resumes transmitting while the jam signal clears the wire. * It resumes transmitting based on the NIC back-off algorithm. It will take priority and be the first host to transmit after the collision. 6 Which statements describe asymmetric switching? (Choose three.) It uses data compression algorithms to manage higher bandwidth interfaces. * It is often used to provide high bandwidth uplinks for a number of lower bandwidth client interfaces. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * It provides connections between network segments that operate at different bandwidths. It uses cut-through forwarding when going from a lower bandwidth to a higher bandwidth interface. It is used to provide more bandwidth to network clients than to backbone or server links. * It may require buffering frames before forwarding to the destination interface. 7 Which statements are true concerning the shared memory buffering used by an Ethernet switch? (Choose two.) * Frames are processed through a single queue. * All frames are placed in a common memory buffer. Frames are placed in a queue for the destination port. A port with a full memory buffer can cause frames for available ports to be delayed. Each switch port is statically assigned a buffer of equal size. 8 Which statements are true regarding hubs? (Choose three.) * Hubs operate at Layer 1 of the OSI model. They create separate collision domains. * Signals are distributed through all ports. Layer 2 addresses are used to make decisions. They calculate the CRC for each frame received prior to forwarding. * Bandwidth is shared among all connected users. 9 What are the functions of routers? (Choose three.) improving network performance by increasing latency by twenty to thirty percent * segmenting broadcast domains * forwarding packets based on destination network layer addresses * segmenting collision domains forwarding packets as soon as the destination MAC address is read developing routing table entries based on source IP addresses 10 Which of the following devices use physical addresses to make forwarding decisions? (Choose two.) Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 hub * bridge router * switch concentrator multi-port repeater 11 Which form of buffering is used by bridges? cut-through fragment-free fast-forward * store-and-forward 12 Switching may be implemented to improve the performance of which of the following networking technologies? (Choose three.) * Ethernet 10BASE-T Ethernet 10BASE2 * FDDI * Token Ring EIA-232 13 Hubs are concerned with which PDU? * bits frames packets datagrams 14 What does switch latency describe? forwarding method used by a switch time it takes for a frame to be received by a switch * improvement in network performance from using a switch time delay between when a frame enters and exits a switch increase in the size of a collision domain from using a switch 15 Where are switching tables stored in a Cisco LAN switch? ROM * CAM Flash SIMM NRAM 16 Which switching mode changes to store-and-forward mode after it detects a given number of errors? cut-through adaptive fast-forward fragment-free * adaptive cut-through 17 Which of the following is a Layer 2 broadcast address? 0.0.0.0 Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 255.255.255.255 11:11:11:11 FF:FF:FF:FF * FF:FF:FF:FF:FF:FF 18 Refer to the graphic. Which point in the frame must be reached before it is forwarded by a switch that is using fast-forward mode? A B * C D E F 19 Why does a switch have higher throughput compared to a bridge? Switching occurs in software. * Switching occurs in hardware. Switches create virtual circuits. Switches segment LANs. 20 What is the potential throughput of a 10 Mbps Ethernet connection operating in full-duplex mode? (Choose two.) 10 Mbps total * 20 Mbps total 5 Mbps TX and 5 Mbps RX * 10 Mbps TX and 10 Mbps RX 40 to 60 percent on TX and RX 21 An Ethernet switch has developed the MAC address table shown at the top of the graphic. What action will the switch take when it receives the frame shown at the bottom of the graphic? forward the frame out all interfaces forward the frame out all interfaces except Interface3 discard the frame * forward the frame out Interface1 forward the frame out Interface2 forward the frame out Interface3 22 Which of the following are true regarding the addition of switches to a network? (Choose two.) * They increase the number of collision domains. They decrease the number of collision domains. They increase the number of broadcast domains. They decrease the number of broadcast domains. * They increase the amount of bandwidth available to users. They decrease the amount of bandwidth available to users. 23 What is designed to prevent multiple devices on an Ethernet network from transmitting at the same time? synchronization clock * CSMA/CD access method token access method shared medium 24 Refer to the graphic. Which point must be reached before a frame is forwarded when the switch is using store-and-forward mode? A B C D E *** F

09-07-2006, 03:03	#9
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 7.sınav 1 Refer to the graphic. Server sends an ARP request for the MAC address of its default gateway. If STP is not enabled, what will be the result of this ARP request? Router_1 will kill the broadcast and reply with the MAC address of the next hop router. Switch_A will reply with the MAC address of the Router_1 E0 interface. * Switch_A and Switch_B will continuously flood the message onto the network. Switch_B will broadcast the request and reply with the Router_1 address. The message will cycle around the network until its TTL is exceeded. 2 How is the information contained in BPDUs used by switches? (Choose two.) to prevent loops by sharing bridging tables between connected switches to set the duplex mode of a redundant link * to determine the shortest path to the root bridge * to determine which ports will forward frames as part of the spanning tree to activate looped paths throughout the network 3 What elements will exist in a converged network with one spanning tree? (Choose two.) * one root bridge per network all non-designated ports forwarding * one root port per non-root bridge multiple designated ports per segment one designated port per network 4 Which of the following criteria does a switch use to select the root bridge? (Choose two.) memory size * bridge priority switching speed number of ports * base MAC address switch location 5 How does a switch forward a multicast frame through the network? It floods it to all ports as a broadcast. It is forwarded only to ports that contain the destination address. It is sent to the port that contains the first destination address. * It floods it to all ports except the one it was received on. It is dropped and not sent to any address. 6 What happens when there is a topology change on a network that utilizes STP ? (Choose two.) * User traffic is disrupted until recalculation is complete. The switch recomputes the Spanning Tree topology after the network converges. All ports are placed in learning state until convergence has occurred. * A delay of up to 50 seconds is incurred for convergence of the new Spanning Tree topology. User data is forwarded while BPDUs are exchanged to recompute the topology. 7 How much time does it take for a switch port to go from the blocking state to the forwarding state? 2 seconds 15 seconds 20 seconds * 50 seconds 8 Following a link failure, when does Rapid Spanning Tree Protocol allow point-to-point and edge type links to go to the forwarding state? in 15 seconds never * immediately in 30 seconds after 90 seconds 9 What will be the port assignments and port states in the STP-enabled network shown in the graphic? (Choose two.) * Port 1/1 will be a root port, 1/11 will be a designated port. Port 1/1 will be a designated port, Port 1/11 will be a root port. Port 1/2 will be a root port, 1/12 will be a designated port. Port 1/1 will be blocked * Port 1/12 will be blocked. 10 Which algorithm is used to create a loop free switched topology? * Spanning Tree Shortest Path First Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 Dykstra Rapid Tree Bellman-Ford 11 Which of the following are problems that can occur in redundantly switched networks? (Choose three.) * broadcast storms corrupted ARP tables duplicate MAC addresses inaccurate routing tables * multiple copies of Ethernet frames * MAC address table instability 12 How can a network administrator influence which STP switch becomes the root bridge? Configure the switch as the static root bridge. Change the BPDU to a higher value than that of the other switches in the network. Change the BPDU to a lower value than that of the other switches in the network. * Set the switch priority to a smaller value than that of the other switches in the network. Set the switch priority to a higher value than that of the other switches in the network. 13 What features of the Spanning-Tree Protocol contribute to the time it takes for a switched network to converge after a topology change occurs? (Choose three.) Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 the max-age timer the listening forward delay * the spanning-tree hold down timer * the learning forward delay the spanning-tree path cost Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * the blocking delay 14 Which of the following are valid STP port states? (Choose three.) * blocking * learning converging * listening switching 15 How often are BPDUs sent by default in a network using the spanning-tree algorithm? every second * every two seconds every three seconds every four seconds 16 In which STP state does a port record MAC addresses but not forward user data? blocking * learning disabling listening forwarding 17 What is meant by "five nines" network uptime? A network should be available until 9:00 pm five days of the week. * A network should be functioning 99.999% of the time. There should be five nine-port uplinks for each backbone segment. Five percent of network expenditures should address 99% of user requirements. Nothing short of 100% network uptime is acceptable in modern networks. 18 Refer to the network shown in the graphic. Host1 needs to transfer data to host2, but host1 has no MAC address entry in its ARP cache for host2. What will happen on the network as host1 prepares to transmit its data to host2? Host1 will receive an ICMP destination unknown message from switch3. * All hosts in the network shown will receive an ARP request message from host1. Multicasting will occur until host2 is located. Switch3 will send the host2 MAC address from its bridging table to host1. A broadcast storm will occur. 19 What link types have been defined for Rapid Spanning-Tree Protocol? (Choose three.) * shared end-to-end * edge-type boundary-type point-to-many * point-to-point 20 What characteristic of Ethernet makes a redundantly switched network prone to loops? Routers are only able to prevent loops at Layer 3, while Ethernet exists at Layer 2. * The Ethernet protocol has no TTL mechanism. Switches lack the sophisticated software required to prevent loops. Looping of frames is a reliability mechanism built in to the Ethernet protocol. 21 What is the first step in the process of convergence in a spanning tree topology? * election of the root bridge determination of the designated port for each segment blocking of the non-designated ports selection of the designated trunk port activation of the root port for each segment 22 Switch_A and Switch_B shown in the graphic receive an ARP request from the host and forward it out their ports. The switches receive the forwarded requests from each other and in turn flood the requests again. What will be the result if this process continues? * a broadcast storm multicast errors ARP table errors MAC address instability redundant unicast frame forwarding 23 In which STP state does a switch port transmit user data and learn MAC addresses? blocking learning disabling listening * forwarding 24 Which of the following describe the BIDs used in a spanning tree topology? (Choose two.) They are sent out by the root bridge only after the inferior BPDUs are sent. * They consist of a bridge priority and MAC address. Only the root bridge will send out a BID. * They are used by the switches in a spanning tree topology to elect the root bridge. The switch with the fastest processor will have the lowest BID.

09-07-2006, 03:05	#10
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 8.sınav 1 Which of the following states the 80/20 rule of end-to-end VLANs? 80% of network resources should be remote and 20% should be on the local VLAN. 80% of VLANs should be static and the remaining 20% should be dynamic. * 80% of network traffic should be local and 20% remote. 80% of the network sources should be centralized at the core layer and the remaining 20% at the distribution layer. 80% of traffic should be routed and 20% should be switched. 2 Which of the following describe networks in which the use of static VLANs is appropriate? (Choose three.) * Workstations, departments, and network resources are seldom moved. VLAN port membership frequently changes. * Robust VLAN management software is available to the network administrator. * The overhead required to manage VLAN MAC address and custom filtering tables is not desirable. VLANs are often added, deleted, and modified. 3 Which factors influence the number of VLANs that may be required on a switch? (Choose three.) the physical addressing scheme * traffic patterns in the network * types of applications in use the adaptability of the network * workgroup functions and commonality the tagging option used for VLAN identification 4 If a switch connects 12 collision domains and is configured with three VLANs, how many broadcast domains does it have? 1 * 3 4 12 5 A network administrator has configured a switch with VLANs. Hosts will join the VLANs based on their MAC or IP address. What type of VLANs have been configured on the switch? * dynamic database multiple port-based 6 Which of the following statements are true regarding a root bridge in a spanning tree topology? (Choose two.) * The root bridge timers control BPDU traffic on the network. Only the show commands on the switch can display root bridge information. * It is the central point of a spanning tree topology. Storm control is enabled by default. VLANs cannot be trunked between switches until the root bridge has been elected. 7 Switch-A and Switch-B are both configured with ports in the Marketing, Sales, Accounting, and Admin VLANs. Each VLAN contains 12 users. How many different subnetworks will be needed to enable routed connectivity between the VLANs? 1 * 4 12 48 8 What happens to the member ports of a VLAN when the VLAN is deleted? * They become inactive. They default back to the management VLAN. They automatically become a part of VLAN1. They must be assigned to another VLAN before the original VLAN can be deleted. They remain a part of that VLAN until the switch is rebooted. They then become members of the management VLAN. 9 Which of the following are methods of establishing VLAN membership? (Choose three.) * logical addresses * physical addresses ISL addresses * switch port attachment hardware platform traffic pattern 10 A network administrator is attempting to configure routing between VLANs over a trunked link. A trunk link cannot be established between a switch and a router. Which of the following are possible sources of this problem? (Choose two.) * The router IOS does not support trunking. The port is connected and is not receiving alignment and FCS errors. * The switch duplex and speed are not set properly. The router and switch are running different versions of STP. The switch IP address is incorrectly configured. 11 What does a switch do when it receives a frame and the source address is unknown? The switch will discard the frame. The switch will request the sender resend the frame. * The switch will map the source address to the port on which it was received. The switch will flood the frame to all attached devices. The switch will issue an ARP request to confirm that the source exists. 12 What needs to be done when deleting an entire VLAN? (Choose three.) * Enter database configuration mode. Reboot the switch in order for the changes to take effect. * Use the negative form of the command that was used to create the VLAN. * Reassign the switch ports from the deleted VLAN to other VLANs if they are to be used. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 Use the erase vlan command in global configuration mode. Delete the vlan.dat file from flash. 13 A network administrator has configured a switch with three VLANs: VLAN1, VLAN2, and VLAN3. Port 10 is to be assigned to VLAN3. Which of the following commands are needed to assign port 10 to VLAN3? (Choose three.) Switch_1(config)# switchport interface fastethernet 0/10 * Switch_1(config-if)# switchport mode access Switch_1(config-if)# switchport access * Switch_1(config-if)# switchport access vlan 3 * Switch_1(config)# interface fastethernet 0/10 Switch_1# vlan database 14 What are the characteristics of VLAN1 in a default switch configuration? (Choose three.) * CDP messages are only sent on VLAN1. * VLAN1 is reserved for links between switches. * All switch ports are members of VLAN1. VLAN1 must be created before ports can be assigned to it. Only switch port 0/1 is assigned to VLAN1. An IP address configured on the switch will only apply to ports on VLAN1. 15 A network administrator has just finished configuring a switch with multiple VLANs. A workstation on VLAN2 cannot communicate with a workstation on VLAN3. What needs to be done to correct this problem? * The traffic needs to be routed between the two VLANs. The hosts must be reconfigured to be on the same logical network. The VLANs need to be configured to be on the same broadcast domain. The switch must be configured to share VLAN traffic. 16 What is true of the method by which VLAN membership is identified in Ethernet frames? (Choose two.) * The frame header is in its original format when it reaches the endpoint device. The VLAN membership of frames does not need to be identified unless ISL is in use. * The Ethernet frame is encapsulated or modified with the VLAN ID information. The VLAN ID is removed by the endpoint device upon delivery of the frame. 17 Which approach to assigning VLAN membership maximizes forwarding performance? membership by MAC address membership by logical address membership by protocol * membership by port membership by operating system 18 Which of the following commands will assign switch port 0/9 to VLAN3? * Switch(config-if)# switchport access vlan 3 Switch(config-if)# switchport vlan 3 Switch(config-if)# switchport access 3 Switch(vlan)# switchport 0/9 Switch(vlan)# access switchport 0/9 19 How does a bridge handle the frames that it receives? (Choose three.) Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 If the source is unknown, the source port is shutdown. If the source port of a frame is unknown, a bridge will issue an ARP request. * If the destination is on another segment, the bridge forwards the frame only to the correct interface. A bridge forwards frames for unknown destinations to the default gateway. * If the destination port is unknown, a bridge will flood the frame to all ports in the broadcast domain, except for the source port. * If the destination of the frame is on the same segment as the source, a bridge will not forward the frame. 20 If two 12-port hubs are connected to a switch that has three VLANs configured, how many bridging tables will the switch maintain? 1 2 * 3 12 36 21 VLAN 10 needs to be removed from a switch. Which command must the administrator enter in order to accomplish this task? Switch(config-if)# no switchport access vlan 10 Switch(config-if)# erase switchport access vlan 10 * Switch(vlan)# no vlan 10 Switch(vlan)# no vlan database 10 22 How does the use of VLANs benefit an organization? (Choose two.) by centralizing departmental staff and network resources together in a single physical area * by allowing organizational flexibility by grouping users together by function instead of physical location * by simplifying the task of adding and moving network resources and users in a growing organization by reducing the number of broadcast domains in an enterprise network by eliminating the need for routing traffic in large networks by reducing network management costs by replacing many Layer 2 devices with a few Layer 3 devices 23 Refer to the network shown in the graphic. Host A on VLAN1 has sent a message requesting the MAC address of its default gateway. Which of the following network hosts will process this message? The message will be seen by the hosts on VLAN1 and VLAN2. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 The message will be seen only by the hosts connected to Switch1. The message will be seen only by the hosts connected to VLAN1 on Switch1. * The message will be seen by the hosts connected to VLAN1 on Switch1 and Switch2. The message will only be seen by router interface e0. 24 Which of the following commands are used to verify VLAN configuration? (Choose two.) * Switch# show vlan id id_number *** Switch# show vlan Switch# show config vlan id_number Switch# show vlan config id_number Switch# show interface vlan id_number

09-07-2006, 03:08	#11
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 9.sınav part1 1 What information does frame tagging add to each frame to allow delivery of frames across a switched trunk? the destination MAC address the switch MAC address * the VLAN ID the BID 2 Switch1 is not participating in the VTP management process with the other switches shown in the graphic. What are the possible reasons for this? (Choose two.) Switch2 is in transparent mode. Switch1 is in client mode. * Switch1 is using VTP version 1 and Switch2 is using VTP version 2. Switch2 is in server mode. * Switch1 is in a different management domain. Switch1 has no VLANs. 3 A router is configured to connect to a trunked uplink as shown in the graphic. A packet is received on the FastEthernet 0/1 physical interface from VLAN 10. The packet destination address is 192.168.1.120. What will the router do with this packet? The router will forward the packet out interface FastEthernet 0/1.1 tagged for VLAN 10. * The router will forward the packet out interface FastEthernet 0/1.2 tagged for VLAN 60. The router will forward the packet out interface FastEthernet 0/1.3 tagged for VLAN 60. The router will forward the packet out interface FastEthernet 0/1.3 tagged for VLAN 120. The router will not process the packet since the source and destination are on the same subnet. The router will drop the packet since no network that includes the source address is attached to the router. 4 What can cause a VTP configured switch to issue a summary advertisement? (Choose two.) * A new client switch has been added to the management domain. A new host has been attached to a switch in the management domain. A port on a switch in the management domain has changed to blocking mode. * A five-minute update timer has elapsed. The advertisement revision number has reached n+1. 5 A switch is configured with the commands shown in the diagram. Host1 is connected to port 0/4 with an IP address of 192.168.1.22/28. Host2 is connected to port 0/5 with an IP address of 192.168.1.33/28. Host3 is connected to port 0/6 with an IP address of 192.168.1.30/28. Select the statements that describe the success of pinging from one host to another. (Choose three.) Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 Host1 can ping Host2. * Host1 cannot ping Host2. * Host1 can ping Host3. Host1 cannot ping Host3. Host2 can ping Host3. * Host2 cannot ping Host3. 6 Refer to the graphic. What are some advantages of replacing the individual VLAN links between Switch1 and Switch2 with a single trunk line? (Choose three.) * It would free 2 switch ports on each switch. It would free 3 switch ports on each switch. * It would save 2 cabling runs. It would save 3 cabling runs. It would provide three times the bandwidth of the individual links. * It would allow adding more VLANs without requiring more cabling or switch ports. 7 A new host needs to be connected to VLAN 1. Router RA is attached to the VTP trunk and configured as shown in the output contained in the graphic. Which of the following IP addresses should be assigned to this new host? 192.168.1.1 /26 192.168.1.11 /28 * 192.168.1.22 /28 192.168.1.33 /28 192.168.1.44 /28 192.168.1.55 /28 8 Which of the following are benefits of using VTP? (Choose three.) * configuration consistency across an administration domain * reduced complexity of managing and monitoring VLAN networks reduced latency for forwarding broadcast frames * ability to trunk over mixed media networks increased convergence ability enhanced VLAN isolation 9 A switch in a VTP domain sends an advertisement request. What will be the response? A configuration status reply will be issued from the closest client switch. A three-way handshake will establish a configuration session with the VTP server. * Summary and subset advertisements will be sent by the VTP server. The configuration version number will be set to zero and all switches in the domain will issue advertisements regarding the state of their VLANs. 10 By default, to which VLAN does a trunked link belong? the first VLAN defined the last VLAN defined * all VLANs the lowest number VLAN 11 Host A sends a frame to host B over the network shown in the graphic. Each link has been labeled with a letter. On which links along the path between hosts A and B will a VLAN ID tag be included with the frame? * C, E A, C, E C, E, F A, C, D, E A, B, C, D, E A, B, C, D, E, F, G 12 The switches in the diagram are connected with trunks within the same VTP management domain. Each switch is labeled with its VTP mode. A new VLAN is added to Switch3. This VLAN does not show up on the other switches. What is the reason for this? VLANs cannot be created on transparent mode switches. Server mode switches neither listen to nor forward VTP messages from transparent mode switches. * VLANs created on transparent mode switches are not included in VTP advertisements. There are no ports assigned to the new VLAN on the other switches. Transparent mode switches do not forward VTP advertisements.

09-07-2006, 03:10	#12
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 9.sınav part2 13 Select the items that describe VTP client mode operation. (Choose two.) can add VLANs of local significance only * can only adopt VLAN management changes can create and adopt updated VLAN management information can only pass VLAN management information without adopting changes can add VLANs to domain * cannot add VLANs 14 If trunking were not used in the network shown in the graphic, how many links would be required to carry the traffic for all the VLANs between the switches? 1 2 * 3 4 15 The LAN devices are configured as shown in the diagram. Why are Host1 and Host2 unable to communicate? No VTP domain has been configured. A router is needed to forward traffic between the VLANs. The switch does not have an entry in its CAM table for Host2. * The host IP configurations are on different networks. The ports on each VLAN must be grouped together on the switch. 16 What should be done before moving a Catalyst switch to a new VTP management domain? (Choose three.) * Verify that the new switch has a lower configuration revision number than the other switches in the domain. Reset the VTP counters to allow the switch to synchronize with the other switches in the domain. Download the VTP database from the VTP server in the new domain. Configure the VTP server in the domain to recognize the BID of the new switch. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * Select the correct VTP mode and version. * Configure the switch with the name of the new management domain. 17 Which statements describe the network design shown in the graphic? (Choose three.) * This design will not scale easily. This design exceeds the maximum number of VLANs that can be attached to a switch. * Devices on the different VLANs can communicate through the router. This design requires the use of the ISL or 802.1q protocol on the links between the switch and the router. * This design uses more switch and router ports than are necessary. The router merges the VLANs into a single broadcast domain. 18 How do devices on VLANs communicate? (Choose two.) Devices on different VLANs communicate through VTP. * Devices on different VLANs communicate through routers. Devices on different VLANs communicate over a trunk link between switches. Devices on the same VLAN communicate through a router. * Devices on the same VLAN communicate through Layer 2 switches. 19 What will prevent VLAN information from being overwritten when a switch is moved from one VTP management domain to another? configuring the new switch to operate in client mode configuring the correct VTP version on the new switch connecting the new switch directly to a server mode switch to update the VTP database * resetting the configuration revision number of the new switch 20 What does a client mode switch in a VTP management domain do when it receives a summary advertisement with a revision number higher than its current revision number? It suspends forwarding until a subset advertisement update arrives. * It issues an advertisement request for new VLAN information. It increments the revision number and forwards it to other switches. It deletes the VLANs not included in the summary advertisement. It issues summary advertisements to advise other switches of status changes. 21 Which devices can be connected to a VLAN trunk? (Choose three.) * a switch a hub * a router * a server with a special NIC a CSU/DSU a repeater 22 The network administrator has configured the mode of switch port 0/5 to trunk. Which additional command needs to be entered before trunking will work on this port? Switch(config)# switchport 0/5 encapsulation trunk Switch(config)# switchport encapsulation isl * Switch(config-if)# switchport trunk encapsulation dot1q Switch(config-if)# switchport encapsulation capability trunk 23 Which of the following statements describe VTP transparent mode operation? (Choose two.) Transparent mode switches can create VLAN management information. * Transparent mode switches can add VLANs of local significance only. * Transparent mode switches pass VLAN management information that they receive to other switches. Transparent mode switches can adopt VLAN management changes received from other switches. Transparent mode switches send out updates informing other switches about changes in the status of their VLANs. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 24 A router has two serial interfaces and two FastEthernet interfaces. It needs to connect to a wide area link to the main office and to four VLANs in the local network. How can this be accomplished in the most efficient manner? *** Connect a trunked uplink from the switch to a router FastEthernet interface and create logical subinterfaces for each VLAN. Use a hub to connect the four VLANS with a FastEthernet interface on the router. Two additional FastEthernet interfaces are required to interconnect the VLANs. Use serial to FastEthernet transceivers to connect two of the VLANs to the router. Attach the other two VLANs directly to the available FastEthernet ports. Add a second router to handle the inter-VLAN traffic.

09-07-2006, 03:12	#13
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 practice final ne yazıkki yok

09-07-2006, 03:14	#14
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 final part1 1 Which of the following describes the roles of devices in a WAN? (Choose three.) * A CSU/DSU terminates a digital local loop. A modem terminates a digital local loop. A CSU/DSU terminates an analog local loop. * A modem terminates an analog local loop. * A router is commonly considered a DTE device. A router is commonly considered a DCE device. 2 What value in the address field of a Frame Relay header identifies the destination of the frame? CIR DE * DLCI ISDN FRAD PVC 3 The serial PPP link between the Left and Right routers is configured as shown in the diagram. Which configuration issue explains why the link is unable to establish a PPP session? The IP addresses must be on different subnets. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * The usernames are misconfigured. The passwords must be different for the CHAP authentication. The clock rate must be 56000. The clock rate is configured on the wrong end of the link. Interface serial 0/0 on Left must connect to interface serial 0/1 on Right. 4 The output of the show interfaces serial 0/0 command for a frame-relay connection indicates that the serial line is up but the line protocol is down. What are possible causes for this? (Choose two.) * There is an LMI-type mismatch between the Frame Relay switch and the router. There is no clock present on the serial interface. The interface is shut down. RARP is not functioning on the router. * The cable is disconnected. 5 Which statements are correct about the point in the network where the responsibility of the service provider ends? (Choose three.) * The International point is on the customer side of the network terminating unit(NTU). * The United States point is at the interface of the customer-provided equipment and the local loop. The responsibility for this point is controlled by IANA. * The point is called the demarcation point. The point is typically located at the service provider's central office. The point is located between the customer's local area networks. 6 While prototyping an internetwork in the corporate lab, a network administrator is testing a serial link between serial 0/0 interfaces on two routers. The labels on the serial cable ends have been damaged and are unreadable. What command can be issued to determine which router is connected to the DCE cable end? show interfaces serial 0/0 show version * show controllers serial 0/0 show protocols serial 0/0 show status serial 0/0 7 A network technician determines DHCP clients are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the graphic, what is the most likely problem? The DHCP server service is not enabled. The inside interface for DCHP is not defined. * The DHCP pool is not bound to the interface. The pool does not have a default router defined for the clients. All the host addresses have been excluded from the DHCP pool. 8 A technician enters the interface serial 0/0.1 multipoint command when configuring a router. What effect will the multipoint keyword have in this configuration? (Choose two.) * Split-horizon issues will need to be resolved for this network if RIP is the routing protocol. A subinterface will be defined for each PVC. * All the participating interfaces of remote routers will be configured in the same subnet. A single DLCI will be used to define all the PVCs to the remote routers. An IP address will need to be configured on the main interface. 9 When configuring a Frame Relay connection, when should a static Frame Relay map be used? (Choose two.) when the remote router is a non-Cisco router * when the remote router does not support Inverse ARP when the local router is using IOS Release 11.1 or earlier * when broadcast traffic and multicast traffic over the PVC must be controlled when globally significant rather than locally significant DLCIs are being used 10 Which router command would be used to associate a Layer 2 address with the corresponding Layer 3 address in the internetwork in the diagram? RouterA(config-if)#frame-relay pvc 100 192.168.15.2 RouterA(config-if)#dialer-map ip 192.168.15.1 100 broadcast * RouterA(config-if)#frame-relay map ip 192.168.15.2 100 broadcast Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 RouterA (config-if)#dialer-map 192.168.15.1 101 serial 0 broadcast RouterA (config-if)#frame-relay dlci 101 192.168.15.1 broadcast RouterA (config-if)#dialer-map 192.168.15.1 inverse-arp broadcast 11 Which of the following ISDN protocols is responsible for call setup and call teardown? * ITU-T Q.921 ITU-T Q.931 ITU-T I.430 ITU-T I.431 12 What are two ways to resolve split-horizon issues in a Frame Relay network? (Choose two.) * create a full-mesh topology disable Inverse ARP * use point-to-point subinterfaces use multipoint subinterfaces remove the broadcast keyword from the frame-relay map command 13 What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco 806 broadband router? defines which addresses are allowed out of the router * defines which addresses are allowed into the router Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 defines which addresses can be translated defines which addresses are assigned to a NAT pool 14 A system administrator is unable to ping the Serial0/0 interface of RouterB from RouterA. During the troubleshooting process, the following facts are established: - IP addressing and subnet masks are correcct. - RouterA is a Cisco router and RouterB is a router from another vendor. - RouterA is configured with the default enncapsulation. - The serial interfaces on both routers aree up. - The protocol is down on the serial interffaces of both routers. What should the administrator do to solve the problem? Add a clock rate on RouterA. Enable the serial interface on RouterB. * Change the encapsulation on both routers to PPP. Connect the serial cable to the correct interface on RouterB. Use the correct serial cable to attach the CSU/DSU to RouterB. 15 An ISDN circuit from a branch office is remaining connected to the regional office. A network administrator determines a user has initiated a continuous ping from a desktop computer to the regional office. Which configuration change would allow the ISDN circuit to disconnect during any attempts to ping, while otherwise functioning properly? change DDR from legacy to dialer profiles remove the dialer list statement from the configuration * change the dialer list to exclude ICMP as interesting disable inverse ARP 16 Below is a list of DDR steps. Which of the following identifies the proper order of DDR? 1 - dial number is looked up 2 - interesting traffic triggers DDR 3 - route to destination is determined 4 - call is made 1,2,3,4 1,3,2,4 2,3,1,4 2,1,3,4 * 3,2,1,4 3,1,2,4 17 Which protocol should be chosen to support WAN connectivity in a multi-vendor system and provide strong security through authentication? NAT with DHCP Frame Relay HDLC with encryption HDLC with CHAP PPP with PAP * PPP with CHAP 18 Which of the following are valid steps for a basic ISDN BRI configuration? (Choose two.) create subinterfaces define the LMI type * set the SPIDs if required by the ISDN switch set the interface DLCI * set the switch type specify the encapsulation as either Cisco or IETF 19 A branch office reports excessive connect time charges for an ISDN circuit used to connect to the regional office. Upon investigation of this issue, it is discovered that when an ISDN connection is initiated to the regional office it remains connected for an excessive amount of time. Which of the following configuration changes could be made to DDR on the router to reduce these connect time charges? use PPP multilink lower idle timer setting use CHAP authentication * change DDR from legacy to dialer profiles 20 A network administrator is having difficulty in establishing a serial link between a Cisco router and a router from another vendor. Both routers are configured for HDLC encapsulation. Which statements are true regarding this configuration? (Choose two.) * The Cisco HDLC frame uses a proprietary "Type" field that may not be compatible with equipment of other vendors. HDLC requires a clock rate to be configured on the routers at both ends of the serial link. * PPP encapsulation is recommended for serial links between equipment from multiple vendors. Usernames must be configured at both ends of the HDLC serial link. The HDLC vendor type must be enabled on the Cisco router. There is a mismatch in the HDLC authentication password configurations.

09-07-2006, 03:17	#15
ecco Daimi Üye Kayıt Tarihi: May 2006 Üye numarası: #65840 Yer: izmir - ksk Mesaj sayısı: 510 Karma etkisi: 10 Karma: 368	semester-3 final part2 21 Given the partial router configuration in the graphic, why does the workstation with the IP address 192.168.1.153/28 fail to access the Internet? (Choose two.) * The NAT inside interfaces are not configured properly. The NAT outside interface is not configured properly. * The router is not properly configured to use the access control list for NAT. The NAT pool is not properly configured to use routable outside addresses. The access control list does not include the IP address 192.168.1.153/28 to access the Internet. 22 The serial PPP link between the Left and Right routers is configured as shown in the diagram. Which configuration issue will prevent IP traffic from crossing this link? The passwords must be different for the CHAP authentication. The usernames are misconfigured. The clock rate must be 56000. The clock rate is configured on the wrong end of the link. * The IP addresses must be on the same subnet. Interface serial 0/0 on Left must connect to interface serial 0/1 on Right. 23 What causes a DDR call to be placed? dial string DLCI idle time out * interesting traffic PVC 24 Which two layers of the OSI model are described by WAN standards? Application Layer, Physical Layer * Data Link Layer, Physical Layer Data Link Layer, Transport Layer Physical Layer, Network Layer 25 A technician is testing RouterA in the graphic. What is the condition of the circuit? The routers are configured for different encapsulations. * The clock rate is not properly configured on the routers. The circuit from WAN provider has failed. Authentication is not properly configured on the routers. The circuit is functioning properly. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 26 A network administrator must provide WAN connectivity between a central office and three remote sites: Orlando, Atlanta, and Phoenix. The Orlando and Atlanta remote offices receive sales orders and transmit shipping confirmations to the Central office consistently throughout the day. The Phoenix remote office consists of one salesperson traveling through the southwest territory. The salesperson occasionally needs to connect to the Central office for e-mail access. How should the network administrator connect the remote sites to the Central office? (Choose two.) Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 * Connect to the Atlanta and Orlando remote offices with Frame Relay connections. Connect to the Atlanta and Orlando remote offices with ISDN connections. Connect to the Atlanta and Orlando remote offices with POTS dial-up connections. Connect to the Phoenix remote office with a Frame Relay connection. * Connect to the Phoenix remote office with a POTS dial-up connection. 27 When a Frame Relay switch detects an excessive buildup of frames in its queue, which of the following may occur? (Choose two.) * Frames with the DE bit set are dropped from the switch queue. Kaynak: Wardom http://www.wardom.com.tr/showthread.php?t=74375 Frames with the FECN and BECN bits set are dropped from the switch queue. Frames in excess of the CIR are not accepted by the switch. The switch sets the FECN bit on all frames it places on the congested link and sets the BECN bit on all frames it receives on the congested link. * The switch sets the FECN bit on all frames it receives on the congested link and sets the BECN bit on all frames it places on the congested link. 28 A system administrator is troubleshooting a connectivity issue between two routers in a new installation. The administrator enters the debug ppp authentication command on the WHSE router. The graphic shows a part of the output received. From this output, what is the most likely cause of this connectivity issue? There is not a route to the remote router. The ISDN circuit on the remote router has failed. * The username/password was not properly configured on the WHSE router. The remote router has a different authentication protocol configured. 29 What does the output of the show frame-relay map command shown below represent? (Choose two.) Serial 0 (up): ip 172.30.151.4 dlci 122, dynamic, broadcast, status defined, active * 172.30.151.4 represents the IP address of the remote router. 172.30.151.4 represents the IP address of the local serial interface. DLCI 122 represents the interface of the remote router. broadcast indicates that a dynamic routing protocol such as RIP v1 can send packets across this PVC. * dynamic indicates that a dynamic routing protocol is enabled for this connection. active indicates that the ARP process is working. 30 What does the status inactive indicate in the output of the show frame-relay pvc command? * The DLCI is programmed in the switch but is not usable. The DLCI was formerly programmed in the switch but is no longer there. The DLCI is usable but has little activity. The DLCI has been renamed for that PVC. 31 Which of the following IP addresses are defined by RFC 1918 as private addresses? (Choose three.) * 192.168.146.0/22 172.10.25.0/16 * 172.31.0.0/16 20.0.0.0/8 * 10.172.92.8/29 32 After configuring a dialup ISDN circuit, a network associate begins testing the dialup connection. When attempting to ping a host on the remote network, the local router does not attempt to dial the remote access server. Which of the following are possible errors in this configuration? (Choose three.) PPP authentication is not properly configured. * No dialer map is configured. The ISDN circuit connected to the remote access server is busy. * No interesting traffic is defined. No route is determined to the remote network. * A wrong number is configured in the dial string. 33 Two routers are connected through a Frame Relay, point-to-point PVC. The remote router is from a vendor other than Cisco. Which interface command is required to configure the link between the Cisco router and the other router? frame-relay pvc multipoint frame-relay pvc point-to-point encapsulation frame-relay cisco * encapsulation frame-relay ietf frame-relay lmi-type ansi 34 Which circuit-switched WAN technology is often used to provide a backup for a leased line and additional capacity during peak usage times? X.25 DSL * ISDN cable modem 35 After the ISDN BRI interface is configured, which command can be used to verify that the router is communicating correctly with the ISDN switch? show dialer show isdn status * show interfaces bri0/0:1 show interfaces serial0/0.1 36 A system administrator needs to configure the regional office with ISDN for DDR connections to three remote sites. Each remote site requires different IP subnets, different encapsulations, and different authentication methods. The sites will not be connected at the same time. The company would like to accomplish this in the most cost effective manner. What method can the system administrator use to accomplish this task using the fewest B channels? Install and configure a PRI. Install and configure a BRI interface with separate SPIDs for each remote site. Install and configure a BRI with multiple switch types in global configuration. * Install and configure a BRI using dialer profiles. Install and configure a separate BRI for each remote site. 37 A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time? Configure static NAT for all ten users. * Configure dynamic NAT for ten users. Configure dynamic NAT with PAT. Configure DHCP and static NAT. What the administrator wants to do cannot be done. 38 Which of the following are characteristics of Frame Relay? (Choose two.) circuit-switched * connection oriented OSI Layer 3 * packet-switched reliable 39 Which of the following is the order for the three phases of establishing a PPP serial link with authentication? authentication, link-establishment, network layer protocols authentication, network layer protocols, link-establishment network layer protocols, link-establishment, authentication network layer protocols, authentication, link-establishment * link-establishment, authentication, network layer protocols link-establishment, network layer protocols, authentication

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