Nokia Nokia Certifications 4A0-103 Questions & Answers

• Question 141:

  Click on the exhibit.

  

  Given the output below, which of the following is FALSE?

  A. A packet arriving with label 131066 will be forwarded out interface 1 /1 /4 with label 131070.

  B. The router is an egress router for FEC 10.10.10.221/32.

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

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

  Correct Answer: D

• Question 142:

  Click on the exhibit.

  

  Under which condition might the peer entry with an LDP ID of 10.10.10.2:0 show the state "Nonexistent"?

  A. When the interface to the peer router is down.

  B. When router R1 has no route to the peer address 10.10.10.2.

  C. When LDP is not configured on the peer router's interface.

  D. When the targeted session is not configured.

  Correct Answer: B

• Question 143:

  What action does a router perform when it looks up the label of an incoming packet in its LFIB and sees that the LFIB maps to an egress label of 3?

  A. It requests a new label from the peer that provided this label.

  B. It pops the label.

  C. It pushes an additional label onto the label stack.

  D. It signals a new label to the peer that sent the packet.

  Correct Answer: B

• Question 144:

  Which of the following regarding MPLS Encapsulation is FALSE?

  A. The customer's Layer 2 header is preserved at the iLER for Layer 2 services.

  B. The customer's Layer 2 Header is preserved at the iLER for Layer 3 services.

  C. The service provider's Layer 2 header is added at the iLER for Layer 2 services.

  D. The service provider's Layer 2 header is added at the iLER for Layer 3 services.

  Correct Answer: B

• Question 145:

  Which of the following about RSVP-TE is TRUE?

  A. RSVP-TE is a routing protocol.

  B. RSVP-TE requests end-to-end resources for unidirectional data flow.

  C. RSVP-TE consults the local RSVP database to determine the path from source to destination.

  D. RSVP-TE generates a TED for storing traffic engineering information.

  Correct Answer: B

• Question 146:

  Which mode does the following statement describe? An LSR will advertise a label mapping immediately, without waiting for a label mapping from the FEC's next-hop.

  A. Liberal label retention mode

  B. Conservative label retention mode

  C. Ordered control mode

  D. Independent control mode

  Correct Answer: D

• Question 147:

  An Alcatel-Lucent 7750 SR label switches a packet it receives. The packet has an outer label TTL of 250 and an inner label TTL of 251. Which of the following is TRUE?

  A. The outer label TTL will be 249 and the inner label TTL will be 250.

  B. The outer label TTL will be 249 and the inner label TTL will be 251.

  C. The outer label TTL will be 251 and the inner label TTL will be 251.

  D. The outer label TTL will be 251 and the inner label TTL will be 252.

  Correct Answer: B

• Question 148:

  What is the purpose of the MPLS TC field (EXP bits)?

  A. Each implementation can use it as they see fit.

  B. It is used to carry the Ether type value.

  C. It is used to carry the TTL value.

  D. It is used to carry QoS classification.

  E. It is used to carry fragmentation flag information.

  Correct Answer: D

• Question 149:

  What is the goal of MPLS Traffic Engineering?

  A. To establish additional LSPs across the network

  B. To allow ECMP to occur across an MPLS network

  C. To enable the implementation of services

  D. To utilize paths other than the lowest cost path

  Correct Answer: D

• Question 150:

  Which of the following about per-interface label space is TRUE?

  A. A single label is assigned to a FEC for all interfaces on the same router.

  B. The same label can be used to forward a packet on an LSR regardless of which egress port is used.

  C. It uses fewer label resources than a per-platform label space.

  D. A separate label is used for each interface that the FEC is advertised on.

  Correct Answer: D