Cisco CCNP 300-510 Questions & Answers

• Question 171:

  Which statement about enabling segment routing for IGPs is true?

  A. Segment routing must first be enabled under then routing process and then globally

  B. Segment routing must first be enabled globally and then under the routing process

  C. Segment routing can be enabled only under the routing process

  D. Segment routing can be enabled only globally

  Correct Answer: B

  Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/seg_routing/configuration/xe-16-6/segrt-xe-16-6-book/sr-ospfv2-node-sid.html

• Question 172:

  Which task is performed when troubleshooting LDP?

  A. Execute the ping utility to generate information about the MAC addresses used along the path

  B. Verify that MPLS is disabled globally and enabled on the necessary interfaces in a per-interface basis

  C. Execute the traceroute utility to generate information about the labels used along the path

  D. Verify that Cisco Express Forwarding has been disabled on the network

  Correct Answer: C

• Question 173:

  Assume that the R1 router is enabled for PIM-SM and receives a multicast packet sourced from 172.16.1.100, and the R1 router has multicast receivers on the Gi0/1, Gi0/2, Gi0/3 and Gi0/4 interfaces.

  

  The multicast packet from the 172.16.1.100 source must arrive on which interface on the R1 router for it to be forwarded out the other interfaces?

  A. Gi0/1

  B. Gi0/2

  C. Gi0/3

  D. Gi0/4

  E. Gi0/1 or Gi0/2 or Gi0/3 or Gi0/4

  F. Gi0/2 or Gi0/3

  G. Gi0/1 or Gi0/4

  Correct Answer: A

• Question 174:

  For which reason can two devices fail to establish an OSPF neighbor relationship?

  A. The two devices have different process IDs

  B. The two devices have different network types

  C. The two devices have different router IDs

  D. The two devices have the same area ID

  Correct Answer: B

  Reference: https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13699-29.html

• Question 175:

  What is used by SR-TE to steer traffic through the network?

  A. shortest path calculated by IGP

  B. dynamic rules

  C. path policy

  D. explicit maps

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/segment-routing/configuration/guide/b-seg-routing-cg-asr9k/b-seg-routing-cg-asr9k_chapter_0100.html

• Question 176:

  A network consultant is troubleshooting IS-IS instances to identify why a routing domains is having communication problems between the two instances. Which description of the possible cause of issues in the routing domain is true?

  A. The same interface cannot be advertised in two different IS-IS instances

  B. The IS-IS "ISP" and "ISP2" instances are unrelated and unable to intercommunicate

  C. The configured IS-IS NSEL value is not allowing the routing systems to establish a neighborship

  D. The interface mode ip router is-is command was not included in the script

  Correct Answer: A

  Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_isis/configuration/xe-3s/irs-xe-3s-book/irs-instance-vrf.html

• Question 177:

  Refer to the exhibit.

  

  After troubleshooting an OSPF adjacency issue, routers 1, 2, and 3 have formed OSPF neighbor relationships. Which statement about the configuration is true?

  A. Router 2 receives a Type 5 LSAs from router 1 for its connected subnets

  B. Router 2 uses router 3 as the next hop for 192.168.0.0/24

  C. Router 2 uses router 1 as the next hop for 192.168.0.0/24

  D. Router 2 receives a Type 7 LSAs from router 3 for its connected subnets

  Correct Answer: C

  From IOS 15.1(2)S onwards, Cisco uses the OSPF path selection order is O > O IA > N1 > E1 > N2 > E2 https://www.cisco.com/c/en/us/support/docs/ip/open-shortest- path-first-ospf/212608-ospf-external-path-selection-external-t.html

• Question 178:

  Refer to the exhibit.

  

  A network operator is getting the route for 10.11.11 0/24 from two upstream providers on #XR3. The network operator must configure #XR3 to force the 10.11.11.0/24 prefix to route via next hop of 10.0.0.9 as primary when available. Which of these can the operator use the routing policy language for, to enforce this traffic forwarding path?

  A. weight of 0 on the prefix coming from 192.168.0.2

  B. lower local preference on the prefix coming from 192.168.0.2

  C. higher local preference on the prefix coming from 192.168.0.1

  D. weight of 100 on the prefix coming from 192.168.0.1

  Correct Answer: A

  Because Weight is the first attribute in path selection algorithm and is 0 for eBGP routes by default. If we set it to 0, router will continue from weight to the bottom, and when comparing neighbor router IDs it will find 192.168.0.1 less than

  192.168.0.2 and st path will be selected as the best

• Question 179:

  Refer to the exhibit.

  

  Which effect of this configuration is true?

  A. It sets the keepalive timer to 30 seconds and the hold timer to 240 seconds.

  B. It sets the keepalive timer to 30 milliseconds and the hold timer to 240 milliseconds

  C. It sets the hold timer to 30 milliseconds and the keepalive timer to 240 milliseconds

  D. It sets the hold timer to 30 seconds and the keepalive timer to 240 seconds

  Correct Answer: A

  Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/command/irg-cr-book/bgp-s1.html#wp1552800140

• Question 180:

  Refer to the exhibit.

  

  A network operator is working to filter routes from being advertised that are covered under an aggregate announcement. The receiving router of the aggregate announcement block is still getting some of the more specific routes plus the aggregate.

  Which configuration change ensures that only the aggregate is announced now and in the future if other networks are to be added?

  A. Configure the summary-only keyword on the aggregate command

  B. Set each specific route in the AGGRO policy to drop instead of suppress-route

  C. Filter the routes on the receiving router

  D. Set each specific route in the AGGRO policy to remove instead of suppress-route

  Correct Answer: A