Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 541:

  Click on the exhibit.

  

  What triggers convergence of the routing protocol when the link between switch 1 and switch 2 goes down?

  A. Convergence is triggered when the adjacency between routers R1 and R2 drops as a result of hello timeouts.

  B. Convergence is triggered when the physical interfaces between routers R1 and R2 go down.

  C. Convergence will not be triggered because switches cannot run routing protocols between them.

  D. Convergence is triggered when the switches notify the routers about the link-state info.

  E. Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down.

  Correct Answer: A

• Question 542:

  Which of the following are major features of OSPF? (Choose 2.)

  A. Fast reroute capability.

  B. Control traffic prioritization.

  C. Route redistribution.

  D. Traffic engineering extensions.

  E. Cut through forwarding.

  Correct Answer: CD

• Question 543:

  Click on the exhibit.

  

  192.168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3.

  Which of the following is a possible solution to the problem?

  A. Add the "originate-default-route" option in the NSSA area configuration on router R3.

  B. Add the "summaries" option to the NSSA area configuration on router R1.

  C. Configure a static route on router R1 to 192.168.3.1.

  D. Configure a default route on router R2.

  Correct Answer: B

• Question 544:

  True or False? MPLS may use an existing data link layer header field to identify a label, instead of using a specific MPLS header

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 545:

  An Alcatel - Lucent 7750 SR receives a route from an IS-IS LSP with internal reachability, and receives the same route from an OSPF Type 5 LSA. If all protocol preferences are default, which route will be installed in the route table?

  A. The route learned from IS-IS will be installed.

  B. The route learned from OSPF will be installed.

  C. Both routes will be installed.

  D. There is not enough information to answer the question

  Correct Answer: A

• Question 546:

  How does an IS-IS router acknowledge the receipt of an IS-IS LSP on a point-to-point link?

  A. They are explicitly acknowledged by sending a CSNP to the sender identifying the LSP.

  B. They are implicitly acknowledged as a part of the link-state database synchronization and maintenance procedures.

  C. They are explicitly acknowledged by sending a PSNP to the sender identifying the LSP.

  D. They are implicitly acknowledged by the DIS multicast of CSNPs.

  Correct Answer: C

• Question 547:

  Click the exhibit button.

  

  A static route is created on router R1 using the command "static-route 0.0.0.0/0 next-hop 10.3.3.2". What command can be used to test the static route on an Alcatel-Lucent 7750 SR?

  A. ping static 10.5.5.5

  B. ping static 0.0.0.0/0

  C. ping 10.5.5.5

  D. ping 0.0.0.0

  Correct Answer: C

• Question 548:

  Which of the following configurations allow a router to periodically attempt to move LSP traffic to a better path, if the head end can find one?

  A. configure router mpls retry-timer 30

  B. configure router mpls resignal-timer 30

  C. configure router mpls retry-attempts 30

  D. configure router mpls global-revertive 30

  Correct Answer: B

• Question 549:

  What is the primary purpose of variable length subnet masks (VLSM)?

  A. To reduce the size of each routing update.

  B. To allow interoperability between routing protocols.

  C. To allow different subnet masks for different subnets.

  D. To reduce the size of the routing table.

  Correct Answer: C

• Question 550:

  Which component of the Alcatel-Lucent 7750 SR is in charge of performing the longest prefix match lookup on packets that arrive on the physical interfaces?

  A. CPM

  B. MDA

  C. Switch Fabric

  D. IOM

  Correct Answer: D