Nokia 4A0-105 Online Practice Questions and Exam Preparation

Nokia 4A0-105 Online Questions & Answers

• Question 61:

  Redundant spoke-SDPs are used between 2 Metro networks for redundancy. How can load balancing be achieved across the redundant spoke-SDPs?

  A. A single management VPLS using RSTP can be used to block different SDPs for different VPLS services.
  B. A single management VPLS using 802.1D-2004 can be used to block different SDPs for different VPLS services
  C. There is no way to have load balancing across redundant spoke-SDPs.
  D. Two management VPLS using RSTP can be used to block different SDPs for different VPLS services.
  D. Two management VPLS using RSTP can be used to block different SDPs for different VPLS services.

• Question 62:

  You are providing a customer two VPLS services in two different Metro networks. VPLS 500 has been configured in Metro 1 and VPLS 900 has been configured in Metro 2. The customer has requested that they have connectivity between the Metro Networks with their existing VPLS services. Which configuration on the PE routers linking the metro networks will allow for VPLS 500 and VPLS 900 to act as a single VPLS service? Assume default values for all VPLS parameters and SDP 999 exists between the metro networks.

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

• Question 63:

  In Rapid Spanning Tree Protocol, a Backup Port is on the same switch as a Designated Port?

  A. TRUE
  B. FALSE
  A. TRUE

• Question 64:

  Click on the exhibit below.

  

  You have been requested to add load balancing across the redundant spoke-SDPs in the network shown. What further configuration is required? (Choose 2)

  A. An additional management VPLS.
  B. Another set of LSPs between PE1 and PE3 and between PE2 and PE4.
  C. Another set of SDPs between PE1 and PE3 and between PE2 and PE4.
  D. Load balancing has to be enabled within the management VPLS.
  A. An additional management VPLS.
  C. Another set of SDPs between PE1 and PE3 and between PE2 and PE4.

• Question 65:

  What action will be taken when an MPLS router receives a frame with a label that does not exist in the LFIB?

  A. The frame will be flooded.
  B. The frame will be discarded.
  C. The frame will be fragmented.
  B. The frame will be discarded.

• Question 66:

  What is the default service-mtu for a VPLS service?

  A. 1500
  B. 1514
  C. 1518
  D. It depends on the access port MTU.
  E. It depends on the network port MTU.
  B. 1514

• Question 67:

  Which of the following statements is false?

  A. VPLS is a bridged LAN service.
  B. VPLS provides L2 VPN services to CEs.
  C. VPLS is a point-to-point service where CEs are presented with point-to-point virtual circuits.
  D. CEs that are members of the same VPLS service instance communicate with each other as if they are connected via a bridged LAN.
  C. VPLS is a point-to-point service where CEs are presented with point-to-point virtual circuits.

• Question 68:

  Click on the exhibit below.

  

  Assume PE-1 has a mesh-sdp configured to every PE node in both Metro networks. What could be done to prevent the bandwidth replication between Metro 1 and Metro 2?

  A. PE-1 must be configured with mesh-SDPs to every node receiving the multicast traffic. There is no way to reduce the replication or bandwidth.
  B. PE nodes in Metro 1 could be configured with mesh-SDPs. PE nodes in Metro 2 would be configured with mesh-SDPs. However, the connection between Metro networks (PE-2 to PE-6) can be configured with a spoke-sdp. This would reduce the replication and bandwidth used on the link between Metro networks. This also reduces the replication required by PE-1.
  C. PE-1 can be configured with spoke-SDPs to every PE node in both Metro networks. This will reduce the bandwidth and replication within the network.
  D. PE nodes in Metro 1 could be configured with spoke-SDPs. PE nodes in Metro 2 would be configured with spoke-SDPs. However, the connection between Metro networks (PE-2 to PE-6) can be configured with a mesh-sdp. This would reduce the replication and bandwidth used on the link between Metro networks. This also reduces the replication required by PE-1.
  B. PE nodes in Metro 1 could be configured with mesh-SDPs. PE nodes in Metro 2 would be configured with mesh-SDPs. However, the connection between Metro networks (PE-2 to PE-6) can be configured with a spoke-sdp. This would reduce the replication and bandwidth used on the link between Metro networks. This also reduces the replication required by PE-1.

• Question 69:

  What is the default remote-age timer of a B-VPLS?

  A. The same timer is used in all VPLS types.
  B. Higher than the default timer of an I-VPLS.
  C. Lower than the default timer of an l-VPLS.
  D. The same timer as an l-VPLS.
  C. Lower than the default timer of an l-VPLS.

• Question 70:

  Which of the following statements regarding unicastand multicast frames is true for a traditional layer 2 switch? (Choose 2)

  A. Multicast frames only forward out ports that have a known receiver.
  B. Unicast frames only forward out ports that have a known receiver.
  C. If the FDB is empty, unicast and multicast frames are treated equally.
  D. If the FDB has an entry for the unicast frame, both unicastand multicast are treated equally.
  B. Unicast frames only forward out ports that have a known receiver.
  C. If the FDB is empty, unicast and multicast frames are treated equally.