Nokia Nokia Certifications 4A0-105 Questions & Answers

• Question 81:

  Click on the exhibit below.

  

  Which ports will become root ports? (Choose 3)

  A. Bridge B 1/1/3

  B. Bridge B 1/1/2

  C. Bridge C 1/1/2

  D. Bridge C 2/1/1

  E. Bridge D 1/1/1

  F. Bridge D 1/1/3

  G. Bridge E 1/1/1

  H. Bridge E 1/1/3

  Correct Answer: ADF

• Question 82:

  How many designated ports are there in a spanning tree topology?

  A. The same as the number of alternate ports in the topology

  B. 1 per segment

  C. The same as the number of root ports

  D. 1 per switch

  Correct Answer: B

• Question 83:

  Click on the exhibit below.

  

  In the following diagram, traffic ingressing on SAP 1/2/3:1 will be passed to the layer-2 DPI device for inspection based on a filter policy applied to the ingress of the SAP. What feature should be enabled on SAP 1/2/1:100 and SAP 1/2/2:100 to ensure that incorrect information is not populated in the FDB of VPLS 1?

  A. Learning should be disabled on both SAPs connected to the DPI device to prevent FDB instability

  B. A MAC filter should be applied to both SAPs connected to the DPI to limit MAC learning on the port

  C. An IP filter should be applied to both SAPs connected to the DPI to prevent FDB instability

  D. The SAPs connected to the DPI should be configured with the "discard-unknown" feature to limit MAC learning on the port

  Correct Answer: A

• Question 84:

  Which of the following OAM tools can be used as a VPLS topology discovery mechanism (Choose 2)?

  A. oam mac-ping

  B. oam mac-populate

  C. oamsvc-ping

  D. oam mac-trace

  Correct Answer: AD

• Question 85:

  Which of the following is a true statement?

  A. In a dynamic environment where MAC addresses are changing rapidly, the lower the age- time, the larger the fdb-table-size should be.

  B. In a dynamic environment where MAC addresses are changing rapidly, the higher the age- time, the larger the fdb-table-size should be.

  C. In a dynamic environment where MAC addresses are changing rapidly, the higher the age- time, the smaller the fdb-table-size should be.

  D. There is no relationship between the age-time and the fdb-table-size.

  Correct Answer: B

• Question 86:

  To reduce the amount of flooding between PE devices which of the following steps should be taken?

  A. Configure the local age timer to be larger.

  B. Configure the local age timer to be lower.

  C. Configure the remote age timer to be larger.

  D. Configure the remote age to be lower.

  Correct Answer: C

• Question 87:

  Which service component in the data plane uniquely identifies a VPLS to the far end PE node?

  A. SDP id

  B. Service ID

  C. VC Label

  D. Tunnel Label

  E. Customer id

  Correct Answer: C

• Question 88:

  Click on the exhibit below.

  

  The service MTU on PE-A is 1514 bytes and the service MTU on PE-C is 1518 bytes. What is the status of the mesh-sdp between PE-A and PE-C?

  A. The mesh-sdp will be up.

  B. The mesh-sdp will be down.

  C. The mesh-sdp will only be up on PE-A.

  D. The mesh-sdp will only be up on PE-C.

  Correct Answer: B

• Question 89:

  Multiple VPLS services can be offered over the same set of LSP tunnels?

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 90:

  Five VPLS services have been configured between two PE routers. What is the minimum amount of SDPs that must be configured?

  A. 5-one for each service.

  B. 2-one in each direction.

  C. 10-five in each direction.

  D. None of the above.

  Correct Answer: B