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4A0-105 Real Exam Questions

Nokia Virtual Private LAN Services

156 questions available · Page 1 of 16

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Question 1 Single choice

What is the MTU impact on the SDP path-mtu if fast reroute facilities-mode is implemented on the LSP?

  1. A

    There will be no impact on the path-mtu.

  2. B

    The path-mtu will decrease by4 bytes.

  3. C

    The path-mtu will increase by 4 bytes.

  4. D

    The path-mtu will decrease by 8 bytes.

  5. E

    The path-mtu will increase by 8 bytes.

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Correct answer: B

Question 2 Single choice

Which of the following statements relating to VPLS is false?

  1. A

    A VPLS is a multipoint Layer 2 service.

  2. B

    A VPLS allows multiple customer sites to be connected in a single bridged domain.

  3. C

    A VPLS on a single node requires a SDP.

  4. D

    With an IP/MPLS infrastructure, service providers can provide multiple VPLS services over a common
    IP/MPLS infrastructure.

  5. E

    The VPLS switches traffic based on MAC address associated to the appropriate SAP.

Show answer and explanation

Correct answer: C

Question 3 Single choice

Click on the exhibit below.

The following IP filter has been configured and applied to a SAP in a non-VPLS service.

Which of the following statements is true?

  1. A

    An error will be generated and the configuration will not be allowed.

  2. B

    The filter entry will be ignored and traffic matching the criteria will be forwarded

  3. C

    All traffic matching entry 20 will be dropped.

  4. D

    Traffic matching entry 20 will be forwarded to sdp 100:1.

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Correct answer: C

Question 4 Single choice

MC-LAG is only supported on network ports.

  1. A

    TRUE

  2. B

    FALSE

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Correct answer: B

Question 5 Single choice

IEEE 802.3ah is similar to SONET/SDH in that it can count and report bit errors and frame errors.

  1. A

    TRUE

  2. B

    FALSE

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Correct answer: A

Question 6 Single choice

What is the default Spanning Tree protocol used in a VPLS on the Alcatel-Lucent 7750 SR?

  1. A

    802.1D2004

  2. B

    802.1D 1998

  3. C

    comp-dot1w

  4. D

    PVST

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Correct answer: A

Question 7 Multiple choice

The "discard-unknown" command has been enabled at the VPLS level.

Which of the following statements is true? (Choose 2)

  1. A

    Broadcast traffic will be flooded.

  2. B

    If the unicastSA has not been learned in the FDB, the frame will be dropped.

  3. C

    If the unicast DA has not been learned in the FDB, the frame will be dropped.

  4. D

    All traffic will be dropped, including multicast and broadcast.

  5. E

    Broadcast traffic will be dropped.

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Correct answers: A, C

Question 8 Multiple choice

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

  1. A

    Multicast frames only forward out ports that have a known receiver.

  2. B

    Unicast frames only forward out ports that have a known receiver.

  3. C

    If the FDB is empty, unicast and multicast frames are treated equally.

  4. D

    If the FDB has an entry for the unicast frame, both unicastand multicast are treated equally.

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Correct answers: B, C

Question 9 Single choice

Which element of IEEE 802.1ag is responsible for initiating CFM messages?

  1. A

    MEP

  2. B

    MAP

  3. C

    MIP

  4. D

    MUP

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Correct answer: A

Question 10 Single choice

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

  1. A

    MEP

  2. B

    MAP

  3. C

    MIP

  4. D

    MUP

Show answer and explanation

Correct answer: C