Nokia 4A0-C01 Online Practice Questions and Exam Preparation

Nokia 4A0-C01 Online Questions & Answers

• Question 11:

  Click the exhibit.

  

  Based on the output from PE router R1 about VPRN 100, by which protocol was 192.168.10.0/24 learned?

  A. BGP
  B. MP-BGP
  C. LDP
  D. MPLS
  A. BGP

• Question 12:

  Which of the following SAP encapsulations does NOT support multiple services on a port?

  A. Dot1q
  B. Null
  C. QinQ
  D. ATM
  B. Null

• Question 13:

  A Cpipe supports both structured and unstructured frames.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 14:

  An LDP-over-RSVP tunnel is established between routers R1 and R6. There is a VPN service running between routers R1 and R6. Which of the following is TRUE?

  

  A. Router R3 swaps both the RSVP- LSP label and LDP transport label received with new labels.
  B. Router R3 swaps the VPN service label received with a new label.
  C. Router R3 uses the same RSVP- LSP label as the one received from router R2.
  D. Router R3 uses the same LDP transport label as the one received from router R2.
  D. Router R3 uses the same LDP transport label as the one received from router R2.

• Question 15:

  If an Alcatel-Lucent 7750 LSR receives a labeled packet with a outer label TTL of 250 and an inner label TTL of 251, which of the following statements is true?

  A. The packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 250.
  B. The packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 251.
  C. The packet will be label switched; both the outer label TTL and the inner label TTL will be 250.
  D. The packet will be label switched; both the outer label TTL and the inner label TTL will be 249, because they must be the same.
  B. The packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 251.

• Question 16:

  What is a key benefit of a VPLS service?

  A. The customer maintains complete control over routing.
  B. The adding of new sites is simplified; no re-configuration is required at existing sites.
  C. The clear demarcation of functionality between service provider and customer makes troubleshooting easier.
  D. All of the above.
  D. All of the above.

• Question 17:

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

• Question 18:

  By default, what does a PE do to support VPLS services for different customers? (Choose 2)

  A. MAC learning.
  B. Maintain a different Forwarding Data Base for each service
  C. ARP mediation.
  D. Maintain a different Routing Information Base for each service.
  A. MAC learning.
  B. Maintain a different Forwarding Data Base for each service

• Question 19:

  By default, what does the Alcatel-Lucent 7750 SR do when a frame with an unknown destination address is received in a VPLS?

  A. It drops the frame.
  B. It floods the frame to all PEs participating in the service.
  C. It sends a destination unreachable message back to the originating host.
  D. It sends the frame to the closest neighbor.
  B. It floods the frame to all PEs participating in the service.

• Question 20:

  What are the similarities between OSPF and IS-IS? Choose two.

  A. Metric is cost based
  B. Slow convergence
  C. Automatic summarization
  D. Support CIDR
  A. Metric is cost based
  D. Support CIDR