New Updated Cisco CCNP 642-902 Real Exam Download 171-180

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QUESTION 171

Refer to the exhibit. Router RT-1 chooses one path to network 198.133.219.0/24. Indicate the reason Router RT-1 chooses this “best” path.

 

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A.       In making its decision about the best path, RT-1 gives precedence to the origin code.

B.       In making its decision about the best path, RT-1 gives precedence to the BGP MED values.

C.       IP address 128.107.2.2 is lower than 128.107.255.2.

D.      In making its decision about the best path, RT-1 prefers the IGP metrics.

E.       RT-1 prefers internal BGP routes.

F.        IP address 128.107.254.2 is lower than 128.107.255.2.

 

Correct Answer: A

 

 

QUESTION 172

Refer to the exhibit. Router RT-1 and router RT-2 both advertise network 131.25.0.0/16 to router RT-3 via internal BGP. What is the reason that router RT-3 chose router RT-1 as its best path to network 131.25.0.0/16.

 

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A.  It advertises the best AS-path.

B.  It advertises the best origin code.

C.  It advertises the best MED.

D.  It advertises the best local preference.

E.  It has a better router ID.

F.  It advertises a lower autonomous system.

 

Correct Answer: E

 

 

QUESTION 173

During BGP configuration on a router that has peered with other BGP speakers, the BGP command aggregate-address 172.32.0.0 255.255.252.0 is issued. However, the peers do not receive this aggregate network in BGP advertisements. Also, the router does not have this aggregate network in its BGP table. Which option indicates a possible reason this command did not cause the router to advertise the aggregate network to its peers?

 

A.       Interface NULL 0 is likely shutdown.

B.       The BGP command no synchronization is missing.

C.       The BGP command no auto-summary is missing.

D.      Subnets of 172.32.0.0/22 do not exist in the BGP table.

E.       The IGP running on this router does not have network 172.32.0.0/22 installed.

F.        The next hop IP address must be a loopback address.

 

Correct Answer: D

 

 

QUESTION 174

Refer to the exhibit. It is desired to set up a BGP neighbor relationship between routers R1 and R4. BGP packets between them could travel through R2 or R3. What is the simplest configuration that will allow for failover?

 

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A.       Configure BGP neighbor relationships between all interfaces on R1 and R4

B.       Install a direct connection between R1 and R4.

C.       Configure loopback interfaces on R1 and R4 to provide the update source address for BGP packets.

D.      Configure only one neighbor relationship between R1’s 192.168.1.2 interface and R4’s 172.16.10.2 interface.

 

Correct Answer: C

 

 

QUESTION 175

Which BGP option is required when load sharing over multiple equal-bandwidth parallel links from a single CE router to a single ISP router over eBGP?

A.       eBGP Multipath

B.       eBGP Multihop

C.       BGP Synchronization

D.      Public AS numbers

 

Correct Answer: B

 

 

QUESTION 176

Refer to the exhibit. The customer has reported an issue about eBGP loading. Currently the AS 100 eBGP links have an average outbound load of 65% and 20% respectively. On further investigation, traffic from 10.10.24.0 accounts for 45%, and 10.10.25.0 and 10.10.32.0 accounts for 20% each of the outbound load. The customer wants to spread the load between the two eBGP links more evenly. The BGP attributes are currently set at their default values. If you are located at AS 100 and want to influence how AS 100 sends traffic to AS 200, what BGP attribute would you configure to cause AS 100 outbound traffic to load the eBGP links more evenly?

 

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A.       On router A, set the default local-preference to 50.

B.       On router B, set the default metric to 150.

C.       On router B, configure a route map for 10.10.25.0/24 that sets the local preference to 150.

D.      On router B, set the default local-preference to 150.

 

Correct Answer: C

 

 

QUESTION 177

Refer to the exhibit. There are two eBGP links between AS100 and AS200. Currently the router A to router E link has an average inbound load of 65% and the router B to router F link has an average inbound load of 20%. After further investigation, it is found that traffic to the 10.10.1.16/28 subnet is using 45% of the bandwidth on the A to router E link and traffic to the 10.10.1.32/28 subnet is using 20% of the bandwidth on the A to router E link. Traffic to the 10.10.1.48/28 subnet is using 20% of the bandwidth on the B to router F link. If you want to influence how AS200 sends traffic to AS100, which two commands would you configure in AS100 to influence AS200 to use the eBGP links more evenly? (Choose two.)

 

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A.  neighbor 192.168.30.2 route-map as_50 out

B.  neighbor 192.168.20.2 route-map as_50 out

C.  route-map as_50 permit 10

    match ip address 50

    set metric 150

    access-list 50 permit 10.10.1.16 0.0.0.240

D.  route-map as_50 permit 10

    match ip address 50

    set metric 150

    access-list 50 permit 10.10.1.32 0.0.0.240

 

Correct Answer: BC

 

 

QUESTION 178

Refer to the exhibit. AS 65500 is running OSPF as its IGP and has two eBGP connections to the Internet provider AS 65501. The provider requires that you advertise all of the prefixes in AS 65500 to the provider as a single 192.168.12.0/22 route. Currently only Routers A and B are able to reach the Internet. Which of the following additions to the configuration will solve this issue?

 

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A.       RouterA(config)#ip cef

B.       RouterA(config)# ip route 192.168.12.0 255.255.252.0 null 0

C.       RouterA(config-router)#ebgp multihop 1

D.      RouterA(config-router)#redistribute ospf 1

E.       RouterA(config-router)#neighbor 192.168.14.253 next-hop-self

F.        RouterA(config-router)#neighbor 192.168.14.253 local-as 65500

 

Correct Answer: B

 

 

 

QUESTION 179

Which BGP command provides the router ID, local preference, next hop, and BGP path in its output?

 

A.       show ip route bgp

B.       show ip bgp

C.       show ip bgp neighbors

D.      show ip bgp summary

 

Correct Answer: B

 

 

QUESTION 180

Refer to the exhibit. For the accompanying router output, which of the following statements describes the state that neighbor 172.16.254.3 is in?

 

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A.       BGP can exchange routing information in this state.

B.       The router will not accept connections from the peer.

C.       The router is listening on its server port for connection requests from the peer.

D.      The router has sent out an active TCP connection request to the peer.

 

Correct Answer: C

 

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