Nokia Nokia Certifications 4A0-104 Questions & Answers

• Question 21:

  What is a key benefit of a VPLS service?

  A. The customer maintains complete control over routing.

  B. The adding of new sites is simplified; no re-configuration is required at existing sites.

  C. The clear demarcation of functionality between service provider and customer makes troubleshooting easier.

  D. All of the above.

  Correct Answer: D

• Question 22:

  A network consists of 4 PE routers. A customer requires a VPLS service and has sites connected to each PE. Each site must have direct connectivity with all other sites. How many SDPs must be configured on each PE?

  A. 0

  B. 2

  C. 3

  D. 4

  Correct Answer: C

• Question 23:

  On which of the following is it NOT possible to configure a MTU?

  A. Network port

  B. Access port

  C. LSP

  D. SDP

  E. Service

  Correct Answer: C

• Question 24:

  Which of the following statements best describes an FDB used in a VPLS service?

  A. A VPLS service does not use an FDB.

  B. An FDB is maintained on the PE router to track MAC addresses learned from all traffic through the router.

  C. An FDB is maintained on the PE router to track MAC addresses learned from all VPLS services on the router.

  D. A separate FDB is maintained for each VPLS service to track MAC addresses learned from each service.

  E. For each VPLS service, two FDBs are maintained to track MAC addresses; one for unicast traffic and one for multicast and broadcast traffic.

  Correct Answer: D

• Question 25:

  In a Layer 2 encapsulation, using Martini, 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 26:

  Which of the following SAPs will forward tagged frames with an outer VLAN tag of 200? (Choose three.)

  A. sap 1/1/1

  B. sap 1/1/1:*

  C. sap 1/1/1:*.0

  D. sap 1/1/1:0*

  E. sap 1/1/1:200.*

  F. sap 1/1/1:300:200

  Correct Answer: ABE

• Question 27:

  In a Layer 2 encapsulation, using Martini, what does the first (top) label represent?

  A. Tunnel Label

  B. VC Label

  C. Operational Control Word

  D. UNI

  E. NNI

  Correct Answer: A

• Question 28:

  Which of the following statements are TRUE about configuring a distributed E-pipe service? (Choose two.)

  A. The vc-id on the spoke-sdp must be explicitly configured.

  B. The vc-id on the mesh-sdp must be explicitly configured.

  C. The vc-id on the spoke-sdp can be configured to match the service id.

  D. The vc-id on the mesh-sdp can be configured to match the service id.

  E. The vc-id on the spoke-sdp does not have to be explicitly configured and will use the service id.

  F. The vc-id on the mesh-sdp does not have to be explicitly configured and will use the service id.

  Correct Answer: AC

• Question 29:

  A mesh SDP is used to create an Fpipe service.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 30:

  Which of the following conditions are necessary in order for service labels to be signaled between two PE routers? (Choose three.)

  A. LDP must be enabled on both PE routers.

  B. RSVP must be enabled on both PE routers.

  C. Traffic engineering must be enabled in the IGP.

  D. The VC-ID must match between the two PE routers in both directions.

  E. The transport tunnel must be operationally up between the two PE routers in both directions.

  F. The SDP ID must match between the two PE routers in both directions.

  Correct Answer: ADE