Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 521:

  Click on the exhibit.

  

  Router R2 uses IS-IS to advertise the network 192.168.3.0/24 to R1. How can router R1 discard the route?

  A. Use an import policy and a prefix list on router R2.

  B. Use an export policy and a prefix list on router R1.

  C. Use an import policy and a prefix list on router R1.

  D. Router R1 cannot discard the route because IS-IS does not support import policies.

  Correct Answer: D

• Question 522:

  If an LSP's loose primary path includes the statement "include green" and "exclude red;" how does CSPF choose the LSP's path?

  A. CSPF chooses a link that is a member of both administrative groups

  B. CSPF chooses only those links that are NOT members of the green admin group

  C. CSPF prunes the green links and uses these links for the secondary path

  D. CSPF signals the LSP path over the green links only, and prunes all other links

  Correct Answer: D

• Question 523:

  Click on the exhibit.

  

  A static route has been configured on router R1 to reach the PC at 139.120.121.2. What else is required to make the ping succeed?

  A. A default route on router R2 to router R1.

  B. A default route on the PC to router R2.

  C. A static route on the PC to router R2 and a static route on router R2 to the PC.

  D. A default route on router R1 to router R2.

  Correct Answer: B

• Question 524:

  Which of the following statements are true? Choose two answers

  A. Selected labels from the FIB are populated to the LIB.

  B. Selected labels from the LIB are populated to the LFIB.

  C. Selected routes from the RIB are populated to the FIB.

  D. Selected routes from the FIB are populated to the RIB.

  E. All labels from the LIB are populated to the LFIB.

  Correct Answer: BC

• Question 525:

  Click on the exhibit button below.

  

  Given the output below, which of the following statements are true? (Choose three)

  A. A packet arriving with label 131066 and destined for prefix 10.10.10.243/32 will be forwarded out interface 1/1/4, with label 131070.

  B. LDP ECMP is enabled.

  C. The router's system address is 10.10.10.242/32.

  D. There are multiple LSPs to reach FEC 10.10.10.244/32.

  E. The router cannot receive any unlabeled packets destined for prefix 10.10.10 223/32.

  Correct Answer: ABD

• Question 526:

  Which of the following statements is true when the implicit null is implemented?

  A. The penultimate router will POP the top label from the packets.

  B. The eLER will receive packets with a top label value of 3.

  C. The eLER will receive packets with a top label value of 0.

  D. The penultimate router will always receive unlabeled packets.

  E. The penultimate router performs a double lookup on the packet.

  Correct Answer: A

• Question 527:

  A router receives an OSPF database description packet from a neighbor that references an LSA, which is already in the router's LSDB. The sequence number in the DBD packet is lower than the sequence number of the LSA in the LSDB.

  What action does the router take?

  A. The router sends a link-state update to its neighbor.

  B. The router sends a link-state acknowledgement to its neighbor.

  C. The router updates the information in its LSDB with the information received from its neighbor.

  D. The router sends a link-state request to its neighbor.

  E. The router takes no action.

  Correct Answer: A

• Question 528:

  In MPLS, labels are distributed in the opposite direction of the data flow.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 529:

  Which of the following statements best describes downstream unsolicited label distribution?

  A. An LER may answer requests for label mappings immediately, without waiting for a label mapping from the next-hop.

  B. An LER may advertise label mappings to all peers for which it might be a next-hop for a given FEC.

  C. An LER propagates a label mapping downstream for a FEC. only if it has a label mapping for the FEC next-hop.

  D. An LER will only distribute a label for a FEC when it has been requested to do so.

  Correct Answer: B

• Question 530:

  Which OSPFv3 LSA type is similar in function to the OSPFv2 Type 4 LSA?

  A. Link

  B. Intra-Area Prefix

  C. Inter-Area Prefix

  D. Inter-Area Router

  Correct Answer: D