Nokia Nokia Certifications 4A0-C04 Questions & Answers

• Question 51:

  In a Layer 2 encapsulation using T-LDP, what does the second (bottom) label represent?

  A. Tunnel Label

  B. VC Label

  C. Operational Control Word

  D. VPI

  E. VCI

  Correct Answer: B

• Question 52:

  Which of the following about VPN labels is FALSE?

  A. They are signaled between PE devices using MP-BGP.

  B. They are swapped at each P router as a packet crosses the service provider network.

  C. They are also known as the inner label or service label.

  D. They indicate to the egress PE the VPRN to which a packet belongs.

  Correct Answer: B

• Question 53:

  Which MPLS label mode saves label mappings received from all peer LSRs?

  A. Conservative label retention

  B. Liberal label retention

  C. Downstream on demand

  D. Downstream unsolicited

  Correct Answer: B

• Question 54:

  Which of the following is NOT considered an option of export policies?

  A. Advertising customer networks into BGP.

  B. Sending aggregates that summarize the AS s address space.

  C. Sending MEDs to influence ingress traffic from peers.

  D. Preventing unwanted NLRI from entering the AS.

  Correct Answer: D

• Question 55:

  Which of the following about Fast Reroute link protection tunnels is FALSE?

  A. Link protection tunnels are established if a router is unable to establish node protection tunnels.

  B. Link protection tunnels are only requested for a primary LSP path.

  C. Link protection tunnels can be created for both one-to-one or facility Fast Reroute.

  D. Link protection tunnels detour around a failed next downstream router.

  Correct Answer: D

• Question 56:

  Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?

  

  A. "client1" routes will be tagged with communities "North" and "West".

  B. "client1" routes will be tagged with community "West".

  C. "client1" routes will be tagged with community "North".

  D. "client1" routes will be rejected.

  Correct Answer: C

• Question 57:

  Which of the following concerning OSPFv3 is TRUE?

  A. OSPFv3 uses MD5 Authentication.

  B. Router LSAs carry IPv6 prefix information.

  C. NSSA is supported in OSPFv3.

  D. OSPFv3 uses a 64-bit router ID.

  Correct Answer: C

• Question 58:

  How many databases does a Link State routing protocol use?

  A. One

  B. Two

  C. Three

  D. Four

  Correct Answer: C

• Question 59:

  Which of the following statements about SAPs that are part of a VPVVS is FALSE?

  A. SAPs can be defined on Ethernet, POS, Sonet/SDH, or TDM channels.

  B. Only one SAP is required for a service that originates and terminates on the same Nokia 7750 SR.

  C. SAPs can have QoS policies assigned to them.

  D. Multiple SAPs can be defined on the same port.

  Correct Answer: B

• Question 60:

  Click the exhibit.

  

  AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "as-set" enabled. Which of the following is TRUE regarding the aggregate route received by router R7?

  A. The AS Path is set to 65540, and the Atomic Aggregate flag is set.

  B. The AS Path is set to 65540 65550, and the Atomic Aggregate flag is set.

  C. The AS Path is set to 65540 65550, and the Atomic Aggregate flag is not set.

  D. The AS Path is set to 65550, and the Atomic Aggregate flag is not set.

  Correct Answer: C