CCNA final2 部分题目

3

In which situation would a default static route be recommended?

when connecting an edge router to the Internet

when variable length subnet masking is in effect

when there is more than one valid route for a destination network

when a destination network has a larger mask than any routes in the

routing table

6

An administrator is configuring Router1 so that it can connect to Router2

by using IP. Which protocol can be used by Router1 to determine the IP address of Router2 when they are directly connected and only Layer 2 connectivity exists between them?

ARP

CDP

ICMP

Telnet

7

Refer to the exhibit. The IP addresses on all interfaces on router R1 were configured before the OSPF protocol had been enabled on the router. No OSPF router ID was manually configured. Which IP address will be selected by the router as an OSPF router ID?

10.10.10.1

172.16.1.1

172.16.2.1

192.168.1.1

192.168.100.1

9Which prompt is used to allow a user to change the IP address of an interface on Router>

Router#

Router(config)#

Router(config-if)#

10Which two statements are true for OSPF Hello packets? (Choose two.) They are used for dynamic neighbor discovery.

They are used to maintain neighbor relationships.

They are used to determine the complete network topology.

They are used with timers to elect the designated router with the fastest

They are used to negotiate correct parameters among neighboring interface

11

Refer to the exhibit. Host A is unable to access the Internet, and troubleshooting has that this is due to an addressing problem. What is incorrectly configured in this

the IP address of the Fa0/0 interface of R1

the subnet mask of the S0/0/0 interface of R1

the IP address of the S0/0/0 interface of R1

the subnet mask of the S0/0/0 interface of R2

12

Refer to the exhibit. R1 is configured properly for a single area OSPF, and R2 has been installed in the network. Which set of commands is required to configure a single for the networks that are connected to R2?

R2(config)# router ospf 1

R2(config-router)# network 192.168.2.0 0.0.0.255 area 0

R2(config-router)# network 10.1.1.0 0.0.0.3 area 0

R2(config)# router ospf 1

R2(config-router)# network 192.168.2.0 0.0.0.255 area 0

R2(config)# router ospf 2

R2(config-router)# network 10.1.1.0 0.0.0.3 area 0

R2(config)# router ospf 1

R2(config-router)# network 192.168.2.0 0.0.0.255 area 0

R2(config-router)# network 10.1.1.0 0.0.0.3 area 1

R2(config)# router ospf 1

R2(config-router)# network 192.168.2.0 0.0.0.255 area 0

R2(config-router)# network 10.0.0.0 0.0.0.3 area 1

15

A router that is using RIPv2 learns of the network 10.10.10.0/24 from two different neighbors. Which value is used by RIPv2 to select the best path to the network?

route metric

subnet mask

longest match

administrative distance

18

What are two switching functions of a router? (Choose two.)

The router encapsulates the packet in the appropriate data link frame

type for the outgoing data link.

The router re-encapsulates the packet in a new frame, which results

in a change of the Layer 2 header at each hop.

The router determines the exit interface after data encapsulation.

The router changes the source logical address to the forwarding

router interface logical address.

The router re-encapsulates the IP packet if no matching entry is

found in the routing table and no default route is configured.

19

Refer to the exhibit. Which combination of IP address and subnet mask can be us serial interface of Router2 in order to put the interface in the same network as t interface of Router1?

IP 172.16.0.18, subnet mask 255.255.255.0

IP 172.16.32.15, subnet mask 255.255.255.240

IP 172.16.0.18, subnet mask 255.255.255.252

IP 172.16.32.18, subnet mask 255.255.255.252

20 A static route has been configured on a router. However, the destination network

exists. What should an administrator do to remove the static route from the routi

Change the routing metric for that route.

Nothing. The static route will go away on its own.

Change the administrative distance for that route.

Remove the route using the no ip route command.

26Which statement correctly describes a feature of RIP?

RIP is a link-state routing protocol.

RIP uses only one metric—hop count— for path selection.

Advertised routes with hop counts greater than 10 are unreachable.

Messages are broadcast every 10 seconds.

27O n a router, which actions can be performed in user mode?

perform password recovery

make global configuration changes

view current router configuration

make changes to a specified interface

28

Refer to the exhibit. A network administrator is troubleshooting the OSPF network.

10.10.0.0/16 network is not showing up in the routing table of Router1. What is the

cause of this problem?

The serial interface on Router2 is down.

The OSPF process is not running on Router2.

The OSPF process is configured incorrectly on Router1.

There is an incorrect wildcard mask statement for network 10.10.0.0/16 on Rout 32

Refer to the exhibit. What information can be determined from the

displayed output?

EIGRP packets are waiting to be sent to the neighbors.

The adjacencies between the routers are yet to be established.

The IP address 192.168.10.10 is configured at serial interface

S0/0/1 of router R2.

Router R2 is receiving hello packets from a neighbor with the IP

address 192.168.10.10 via the R2 S0/0/1 interface.

34

Refer to the exhibit. What happens to a packet that has 172.16.0.0/16 as the best match in the routing table that is shown?

The packet is discarded.

The packet is flooded out all interfaces.

The packet is forwarded via Serial0/0/0.

The packet is forwarded via FastEthernet0/0.

38

A network administrator is analyzing routing update behavior on a network that has both EIGRP and OSPF configured on all routers. Both protocols appear in the output of show ip protocols. However, only EIGRP internal routes appear in the routing tables. Which statement correctly explains the scenario?

The OSPF protocol has a higher cost than EIGRP.

The EIGRP protocol has a lower metric than OSPF.

The EIGRP protocol was configured first on the router.

The EIGRP protocol has a lower administrative distance than OSPF.

40

Which phase of the router boot process involves running diagnostics on the hardware components from ROM?

performing the POST

loading the bootstrap program

locating and loading the Cisco IOS software

locating and loading the startup configuration file

41

What are two reasons for the occurrence of a routing loop? (Choose two.)

slow convergence

incorrectly configured static routes

routes that are learned via two routing protocols

static and dynamic routing being used on the same router

lack of a default route on the router that connects to the Internet

44

Refer to the exhibit. A technician has configured the interfaces on the Router, inspection discovers that interface FastEthernet0/1 is not functioning. Which actio likely correct the problem with FastEthernet0/1?

A clock rate should be added to the interface configuration.

The subnet mask should be added to the interface configuration.

An interface description needs to be added to the interface configuration.

The no shutdown command needs to be added to the interface configuration.

45Of the listed routing protocols, which two will propogate LSPs to all neighbors? (C

IS-IS

EIGRP

OSPF

RIPv1

RIPv2

46

Refer to the exhibit. What does the highlighted entry for network 172.30.0.0/16 in Automatic summarization is enabled on R1.

The routing table of R2 contains only classful networks.

R2 will reject this update.

The routing protocol that is configured on both routers is RIPv1.

47

Refer to the exhibit. R1 and R2 are both configured with RIPv1. Beginning from g

configuration mode, what comand or commands will eliminate RIP updates on the Ether of R2?

R2# configure terminal

R2(config)# router rip

R2(config-router)# passive-interface FastEthernet0/0

R2# configure terminal

R2(config)# passive-interface FastEthernet0/0

R2# passive-interface FastEthernet0/0

R2# configure terminal

R2(config)# interface FastEthernet0/0

R2(config-if)# passive-interface FastEthernet0/0

48

Refer to the exhibit. Which route will be removed from the routing table if manual summarization is disabled the Serial0/0/0 interface of R3?

0.0.0.0/0

172.16.0.0/16

172.16.1.0/24

172.16.3.0/30