Nokia 4A0-105 Online Practice Questions and Exam Preparation

Nokia 4A0-105 Online Questions & Answers

• Question 101:

  Why is MAC explosion a factor to be considered when designing a large VPLS network? (Choose 2)

  A. The time to relearn thousands of MAC addresses may result in excessive flooding or loss of packets.
  B. If the FDB reaches the limit, the router will discard frames.
  C. Discarding frames when the FDB limit is reached could deny SLA guarantees.
  D. It could take several seconds to relearn thousands of MAC addresses denying QoS/SLA guarantees.
  A. The time to relearn thousands of MAC addresses may result in excessive flooding or loss of packets.
  D. It could take several seconds to relearn thousands of MAC addresses denying QoS/SLA guarantees.

• Question 102:

  Click on the exhibit below.

  

  Based on the service-mtu of this B-VPLS, what is the maximum service-mtu of any connecting I-VPLS attached to this B-VPLS?

  A. 9100 bytes
  B. 9104 bytes
  C. 9108 bytes
  D. 9118 bytes
  A. 9100 bytes

• Question 103:

  The operation of a VPLS can be best described by which of the following statements?

  A. A frame should be sent to the PE that connects to the target site whenever possible.
  B. A frame should be flooded as little as possible.
  C. Customer frames should be switched based on the destination MAC address.
  D. All of the above.
  E. Only (a) and (b) are true.
  D. All of the above.

• Question 104:

  In IEEE 802.1ag, which two key functions are configured on bridge ports (SAPs and SDPs) to support CFM messages? (Choose 2)

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

• Question 105:

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

  A. TRUE
  B. FALSE
  A. TRUE

• Question 106:

  Which of the following statements about Spanning Tree Protocol is true?

  A. The switch with the lowest priority becomes the root.
  B. The switch with the highest priority becomes the root.
  C. The switch with the lowest MAC address always becomes the root.
  D. The switch with the highest MAC address always becomes the root.
  A. The switch with the lowest priority becomes the root.

• Question 107:

  When spanning tree is enabled within a VPLS service and the STP mode is 802.1 D 2004 what happens if a PVST BPDU is received on a SAP?

  A. Spanning tree will be disabled on the SAP that the PVST BPDU was received on.
  B. The SAP that the PVST BPDU was received on will be disabled to prevent loops.
  C. The spanning tree encapsulation will be dynamically changed to PVST on the SAP the PVST BPDU was received on.
  D. The PVST BPDU will be ignored and 802.1D 2004 BPDUs will continue to be transmitted on the SAP.
  C. The spanning tree encapsulation will be dynamically changed to PVST on the SAP the PVST BPDU was received on.

• Question 108:

  If the command "disable-learning" has been added at the VPLS level, then MAC entries which have already been learned will not be aged.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 109:

  Which of the following statements is true?

  A. Filter Policies can only be applied on egress.
  B. An IP filter can be applied on ingress at the same time a MAC filter is applied on the egress of the SAP.
  C. Filter Policies can be based on IP, MAC, and VPI/VCI addresses.
  D. Any number of ingress and egress filter policies can be associated with a SAP.
  E. An IP filter and a MAC filter can be applied on the ingress SAP at the same time.
  F. None of the above.
  B. An IP filter can be applied on ingress at the same time a MAC filter is applied on the egress of the SAP.

• Question 110:

  The "discard-unknown" command has been enabled at the VPLS level. Which of the following statements is true? (Choose 2)

  A. Broadcast traffic will be flooded.
  B. If the unicastSA has not been learned in the FDB, the frame will be dropped.
  C. If the unicast DA has not been learned in the FDB, the frame will be dropped.
  D. All traffic will be dropped, including multicast and broadcast.
  E. Broadcast traffic will be dropped.
  A. Broadcast traffic will be flooded.
  C. If the unicast DA has not been learned in the FDB, the frame will be dropped.