Nokia 4A0-105 Online Practice Questions and Exam Preparation

Nokia 4A0-105 Online Questions & Answers

• Question 1:

  What option is available when using PBB to reduce the amount of required VPLS services?

  A. The Alcatel-Lucent 7750 SR supports 1:1 mapping of I-VPLS services to B-VPLS services.
  B. The Alcatel-Lucent 7750 SR supports 1:1 andM:1 mapping of l-VPLS services to B- VPLS services.
  C. The Alcatel-Lucent 7750 SR supports the mapping of multiple, standard VPLS services to B- VPLS services.
  D. The Alcatel-Lucent 7750 SR supports the mapping of multiple, standard VPLS services to l- VPLS services.
  B. The Alcatel-Lucent 7750 SR supports 1:1 andM:1 mapping of l-VPLS services to B- VPLS services.

• Question 2:

  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
  B. Bridge B 1/1/2
  D. Bridge C 2/1/1
  F. Bridge D 1/1/3

• Question 3:

  Why is it best practice to set the bridge priority in an STP network? (Choose 2)

  A. This is not a best practice. Any switch can be used as the root bridge.
  B. So that you know which links will be active in your network.
  C. To prevent a new switch from becoming root when added to the network.
  D. To allow all ports on the root switch to become alternate ports.
  B. So that you know which links will be active in your network.
  C. To prevent a new switch from becoming root when added to the network.

• Question 4:

  A LAG is configured with LACP passive mode enabled. When will LACP packets be sent?

  A. On initialization and then every hello-interval.
  B. Only after receiving LACP packets.
  C. Every 1 second.
  D. Never.
  B. Only after receiving LACP packets.

• Question 5:

  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.
  B. The mesh-sdp will be down.

• Question 6:

  Which of the following needs to be considered when designing Ethernet networks with redundancy?

  A. Processing the TTL takes extra time.
  B. MAC learning rate is doubled.
  C. FDB size is doubled.
  D. Requires a protocol to remove loops.
  D. Requires a protocol to remove loops.

• Question 7:

  Which function of the IEEE 802.1 ag is used for responding to CFM messages but not originating them?

  A. MEP
  B. MAP
  C. MIP
  D. MUP
  C. MIP

• Question 8:

  Port 1/1/1 has been configured as an access port with QinQ encapsulation. Which of the following three statements are true for ingress traffic assuming default configuration? (Choose 3)

  A. sap 1/1/1:*.0 is a valid sap id.
  B. sap 1/1/1:100* will accept frames with a single tag of 100.
  C. sap 1/1/1:200* will strip the top tag of 200 and the bottom tag will be transparently passed.
  D. sap 1/1/1:0* will accept all untagged frames.
  E. sap 1/1/1:0* will accept any tagged frames.
  B. sap 1/1/1:100* will accept frames with a single tag of 100.
  C. sap 1/1/1:200* will strip the top tag of 200 and the bottom tag will be transparently passed.
  D. sap 1/1/1:0* will accept all untagged frames.

• Question 9:

  What is the result of initiating an oam mac-ping to an unknown unicast MAC address in a VPLS instance?

  A. The oam mac-ping will fail. The MAC address must be known in the local FDB to be successful.
  B. The request will be flooded and the only response will come from the PE node that has learned the specified MAC address on a local SAP.
  C. The request will be flooded and the CE device with the corresponding MAC will reply.
  D. All nodes will reply because the oam mac-ping is flooded.
  B. The request will be flooded and the only response will come from the PE node that has learned the specified MAC address on a local SAP.

• Question 10:

  What is the SA in the Ethernet frame used for by a layer 2 switch?

  A. MAC learning
  B. SA filtering
  C. Routing table population
  D. Frame forwarding
  A. MAC learning