Nokia Nokia Certifications 4A0-C04 Questions & Answers

• Question 131:

  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 132:

  Click on the exhibit.

  

  What is the possible reason that the label for prefix 192.10.1.2/32 is not active?

  A. The router does not have a route to reach to the peer 10.10.10.2/32.

  B. The router does not have a route to reach to the prefix 192.10.1.2/32.

  C. The router does not have an export policy defined to export the prefix 192.10.1.2/32 into LDP.

  D. The router receives an invalid label for the prefix 192.10.1.2/32 from its peer.

  Correct Answer: B

• Question 133:

  What is the source IP address in an OSPF update?

  A. 224.0.0.5

  B. 224.0.0.6

  C. The unicast IP address of the interface the update is being sent on.

  D. The system address of the router

  Correct Answer: C

• Question 134:

  Which of the following statements describe the major features of OSPF? Choose two answers.

  A. Fast reroute capability

  B. Control traffic prioritization

  C. Route redistribution

  D. Traffic engineering extensions

  E. Cut through forwarding

  Correct Answer: CD

• Question 135:

  Fill in the blanks: A ________device has all interfaces inside the provider domain, and a _______ device has at least one interface outside the provider domain.

  A. PE, P

  B. P, PE

  C. PE, CE

  D. CE, PE

  E. CE, P

  Correct Answer: B

• Question 136:

  Which of the following statements regarding BGP FRR is FALSE?

  A. The router must receive several BGP routes to compute a backup path.

  B. BGP FRR can be triggered by BFD.

  C. The backup path can use the same next hop as the primary path.

  D. BGP peer-tracking can be used to improve BGP FRR failure detection times.

  Correct Answer: C

• Question 137:

  Which of the following routes is NOT considered an internal route?

  A. A route received from a BGP peer within the same AS.

  B. A route originated by a router in a different cluster of the same AS.

  C. A route received from a BGP peer from a different member AS of a confederation.

  D. A route received from a BGP peer from the same member AS of a confederation.

  Correct Answer: C

• Question 138:

  A router receives an OSPF database description packet from a neighbor that references an LSA, which is already in the router's LSDB. The sequence number in the DBD packet is lower than the sequence number of the LSA in the LSDB.

  What action does the router take?

  A. The router sends a link-state update to its neighbor.

  B. The router sends a link-state acknowledgement to its neighbor.

  C. The router updates the information in its LSDB with the information received from its neighbor.

  D. The router sends a link-state request to its neighbor.

  E. The router takes no action.

  Correct Answer: A

• Question 139:

  Which of the following statements regarding route reflectors is TRUE?

  A. Route reflectors propagate BGP learned routes to their clients.

  B. Route reflectors require "n" iBGP sessions, where "n" is the number of BGP routers in the AS.

  C. Route reflectors disable iBGP split horizon for all iBGP peers in the AS.

  D. Route reflectors do not work in conjunction with confederations.

  Correct Answer: A

• Question 140:

  Which of the following is NOT required when configuring an LSP with an admin group constraint on an Nokia 7750 SR?

  A. Enable traffic engineering on all routers along the LSP path.

  B. Enable CSPF on the head-end router.

  C. Configure a path definition on all routers along the LSP path.

  D. Enable MPLS and RSVP on all routers along the LSP path.

  Correct Answer: C