Nokia Nokia Certifications 4A0-103 Questions & Answers

• Question 181:

  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 182:

  Which one of the following statements regarding the detour object transported in the detour path message is true?

  A. The PLR sends it downstream with the RRO.

  B. The PLR sends it downstream with the ERO.

  C. It associates all detours with the source PLR.

  D. The MP sends it upstream with the RESV message.

  Correct Answer: B

• Question 183:

  What MPLS function should be performed by a router that receives a data packet containing an MPLS label value of 3?

  A. A router will never receive a packet containing this label value.

  B. Request a new label from the peer that provided this label.

  C. Pop the label.

  D. PUSH an additional label onto the label stack.

  E. Signal a new label to the peer that sent the packet.

  Correct Answer: A

• Question 184:

  Which of the following describes what happens when facility backup fast reroute is enabled for a LSP? Choose three answers.

  A. Each PLR will signal a bypass tunnel that avoids the next-hop node or link.

  B. When a failure occurs, the PLR will push an additional label onto the label stack and start forwarding traffic onto its bypass tunnel.

  C. The ingress router will include a RRO object in the path message to indicate the routers that should be PLRs and MPs along the protected path.

  D. The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish bypass tunnels.

  E. When the bypass tunnel is in use, the MP will include the RRO object in its PathErr message, with the local protection in use flag set to notify the ingress router that it is using the bypass tunnel.

  Correct Answer: ABD

• Question 185:

  When a device receives a labeled packet, which of the following can occur?

  A. The packet can only be forwarded as an unlabeled packet.

  B. The packet can be forwarded as a labeled or unlabeled packet, depending on the received label value.

  C. The packet can be forwarded as a labeled or unlabeled packet, depending on the destination IP address in the payload

  D. The packet can only be forwarded as a labeled packet.

  Correct Answer: B

• Question 186:

  Which of the following devices receives labeled packets from the MPLS domain, removes the MPLS header, and forwards unlabeled packets outside the MPLS domain?

  A. P router

  B. LSR

  C. eLER

  D. iLER

  Correct Answer: C

• Question 187:

  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 188:

  If the destination IP address of a received unlabeled packet is successfully matched in the FIB, which of the following statements are true? Choose two answers.

  A. A PUSH label stack operation must be performed.

  B. The outgoing interface and next-hop address will be determined from the FIB.

  C. The packet can be forwarded as a labeled or unlabeled packet.

  D. A POP label stack operation may be performed.

  Correct Answer: BC

• Question 189:

  Which of the following statements regarding the MPLS SWAP label operation is true?

  A. The inner label will be exchanged with the MPLS outer label.

  B. The inner label will be exchanged for a new label.

  C. The outer label will be exchanged for a new label.

  D. All labels will be exchanged for one new label.

  E. All labels will be exchanged for an equal number of new labels.

  Correct Answer: C

• Question 190:

  Click on the exhibit button below.

  

  If the four LSPs shown use the shared-explicit reservation style, how much bandwidth does CSPF request across a single 1Gbps link?

  A. 100Mbps

  B. 200Mbps

  C. 300Mpbs

  D. 600Mbps

  E. 700Mbps

  Correct Answer: E