Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 391:

  Click on the exhibit.

  

  Both Path-1 and Path-2 are down. If Path-2 becomes available again, how does the headend router select the secondary LSP path?

  A. The router will switch to Path-2 because it is the first secondary path configured in the list.

  B. The router will not switch to Path-2 because the current path has the longest uptime.

  C. The router will switch to Path-2 because it is a more preferred path.

  D. The router will not switch to Path-2 because the router will not revert to another secondary path.

  Correct Answer: C

• Question 392:

  How does a DMP inform the downstream routers that it has merged detour tunnels?

  A. The DMP sends the DMP_Object in each detour's PATH messages.

  B. The DMP summarizes PATH messages, giving each detour its own MSGJD.

  C. The DMP identifies itself as the previous hop in each detour's PATH message.

  D. The DMP sends a single PATH message containing the merged DETOUR_Objects.

  Correct Answer: D

• Question 393:

  How many SAPs can be configured on a port configured with NULL encapsulation?

  A. 1

  B. 4096

  C. None. This encapsulation is not supported.

  D. The number is limited only by the capacity of the router

  Correct Answer: A

• Question 394:

  Which of the following are characteristics of a SDP? (Choose 2)

  A. SDPs are a logical way to direct traffic from one router to another.

  B. SDPs are a logical way to direct traffic between services.

  C. SDP IDs are locally unique.

  D. SDP IDs must be unique across the network.

  E. SDPs are specific to one service type

  F. SDPs must use MPLS for their encapsulation

  Correct Answer: AC

• Question 395:

  Click on the exhibit.

  

  An LSP traverses R1-R2-R4-R6 and one-to-one fast reroute with link protection is enabled. All links have the same cost. Which of the following about DMP and MP is TRUE?

  A. R3 and R5 become DMPs; R6 becomes MP.

  B. R3 and R5 become DMPs; R4 becomes MP.

  C. R3, R5, and R6 become DMPs; R4 becomes MP.

  D. R1, R3, and R5 becomes DMPs; R4 and R6 become MPs.

  Correct Answer: A

• Question 396:

  Which of the following about T-LDP is FALSE?

  A. Link-based and T-LDP sessions may be configured on the same LSR.

  B. T-LDP supports sessions between non-directly connected devices.

  C. T-LDP can be configured between directly connected devices.

  D. T-LDP Hello messages are sent to a multicast address.

  Correct Answer: D

• Question 397:

  Click on the exhibit.

  

  All links have 1 Gbps unreserved bandwidth initially and all LSPs have the least-fill feature enabled. After the two LSPs have been signaled as shown, two additional LSPs are configured.

  LSP-3 is signaled first with 50Mbps reserved. LSP-4 is signaled after with 400Mbps reserved.

  Which paths will CSPF choose for LSP-3 and LSP-4?

  A. Both LSP-3 and LSP-4 take R1-R2-R4-R6.

  B. Both LSP-3 and LSP-4 take R1-R3-R5-R6.

  C. LSP-3 takes R1-R3-R5-R6 and LSP-4 takes R1-R2-R4-R6.

  D. LSP-3 takes R1-R2-R4-R6 and LSP-4 takes R1-R3-R5-R6.

  E. CSPF randomly chooses one of the equal cost paths for the two LSPs.

  Correct Answer: B

• Question 398:

  What can the sdp-ping command be used for? (Choose 2)

  A. To test the ability of reaching the far-end IP address of an SDP within the SDP encapsulation

  B. To determine the path MTU to the far-end IP address over an SDP.

  C. To determine the service MTU of the service using an SDP.

  D. To determine the presence of hosts using the service

  Correct Answer: AB

• Question 399:

  Which of the following is NOT a characteristic of MPLS?

  A. It provides the ability to establish connection oriented paths over a connectionless IP network.

  B. It provides a mechanism to engineer network traffic patterns independently of IP routing tables.

  C. It will work over most physical layer protocols.

  D. It can use GRE tunnels to transport data from many different protocols over an IP network.

  Correct Answer: D

• Question 400:

  Which of the following best describes downstream unsolicited label distribution?

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

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

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

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

  Correct Answer: B