Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 291:

  What is the purpose of a T-LDP session?

  A. It allows link LDP to be configured on the edge devices only.

  B. It is used to signal the transport labels in the provider core.

  C. It allows selective control over which devices are configured for LDP.

  D. It is used to signal the service labels in the provider core.

  Correct Answer: D

• Question 292:

  Click on the exhibit.

  

  An LSP traverses R1-R2-R3-R6 and one-to-one fast reroute is enabled. If the protected LSP transports two labels, and router R2 has failed, how many labels will be on the detour path?

  B. 2

  C. 3

  D. 4

  Correct Answer: B

• Question 293:

  Click on the exhibit.

  

  The path of a fast reroute protected LSP is R1-R2-R3. Which of the following about the protected LSP path is TRUE?

  A. All routers along the path, R1, R2, and R3 can be PLRs.

  B. If the R1-R2 link fails, router R4 becomes an MP.

  C. If the R2-R3 link fails, router R3 becomes a PLR.

  D. Router R1 is the LSP head-end and can be a PLR.

  Correct Answer: D

• Question 294:

  Customer 'A' has sites on 3 different Alcatel-Lucent PE routers. The routers are connected to each other through an IP/MPLS network in a full mesh fashion. Customer 'A' requires a VPLS service. Which of the following statements are TRUE? (Choose2)

  A. Each router requires 1 VPLS service.

  B. Each router requires 2 VPLS services.

  C. Each router requires 1 SDP with 2 LSPs, one to each of the other 2 routers.

  D. Each router requires 2 SDPs.

  E. Each router requires 3 SDPs

  Correct Answer: AD

• Question 295:

  Click on the exhibit.

  

  If the primary path fails, which backup LSP path will the head-end router pick first?

  A. The Standby with the highest next-hop IP.

  B. The first Standby in the list.

  C. The Standby with the longest uptime.

  D. The Standby with the lowest next-hop IP.

  Correct Answer: C

• Question 296:

  All links have 1Gbps unreserved bandwidth initially and all LSPs have the least-fill feature enabled. After the two LSPs have been signaled as shown, two new LSPs are configured. LSP-3 is signaled first with 600Mbps reserved. LSP-4 is signaled after with 800Mbps reserved. All LSPs have the same setup and hold priorities. Which paths will CSPF choose for LSP-3 and LSP-4?

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

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

  C. LSP-3 takes R1-R3-R5-R6 and LSP-4 has no available path.

  D. LSP-3 takes R1-R2-R4-R6 and LSP-4 has no available path.

  Correct Answer: C

• Question 297:

  What is the default vc-type for an SDP on the Alcatel-Lucent 7750 SR?

  A. vc-type null

  B. vc-type ether

  C. vc-type vlan

  D. vc-type none

  Correct Answer: B

• Question 298:

  Click on the exhibit.

  

  An LSP path is established on router R1 toward router R6. After router R4 detects that the link between routers R4 and R6 goes down, which of the following will affect the failure propagation time?

  A. The time router R4 takes to send a PATH Error message toward the head-end router.

  B. The time router R4 takes to detect RSVP Hello message timeout from router R6.

  C. The time router R4 takes to send a RESV Error message to the head-end router.

  D. The time router R1 takes to signal an alternate path through router R3.

  Correct Answer: A

• Question 299:

  Which of the following about an established LDP session is TRUE?

  A. It uses a UDP connection with an arbitrary port number.

  B. It uses a UDP connection with well-known port number 646.

  C. It uses a TCP connection with an arbitrary port number.

  D. It uses a TCP connection with well-known port number 646.

  Correct Answer: D

• Question 300:

  Which of the following most accurately describes the default behavior of a VPLS regarding the handling of a tagged frame at the ingress of SAP 1/1/1:100?

  A. The FCS is verified and the customer frame is transported intact over the service provider network.

  B. The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.

  C. The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.

  D. The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.

  Correct Answer: D