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4A0-106 Real Exam Questions

Nokia Virtual Private Routed Networks

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Question 1 Single choice

Which of the following about the maximum number of routes that can be accepted in a VRF for a VPRN service on the Alcatel-Lucent 7750 SR is FALSE?

  1. A

    The Alcatel-Lucent 7750 SR allows the setting of the maximum number of routes that can be accepted in a VRF for a VPRN service.

  2. B

    The "maximum-routes" command is used to specify the maximum number of remote routes that can be held within a VRF for a VPRN service.

  3. C

    When the "maximum-routes" command is used with the "log-only" parameter, new routes are still learned.

  4. D

    Once the "threshold" value is reached, no new routes are added to the VRF.

Show answer and explanation

Correct answer: D

Question 2 Single choice

A provider core consists of 4 PE and 2 P routers. A fully meshed VPRN service is configured on all 4 PEs, and MPLS LSP-based SDPs are used for the service configuration.

How many SDPs must be bound to the VPRN service on each PE?

  1. A

    Two SDPs must be bound to the VPRN service on each PE.

  2. B

    Three SDPs must be bound to the VPRN service on each PE.

  3. C

    Five SDPs must be bound to the VPRN service on each PE.

  4. D

    Twelve SDPs must be bound to the VPRN service on each PE.

Show answer and explanation

Correct answer: B

Question 3 Single choice

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier who is an Internet Service Provider (ISP).

Which of the following configuration steps is NOT required?

  1. A

    Configuring iBGP sessions between PEs residing in different customer carrier sites,

  2. B

    Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

  3. C

    Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-CE.

  4. D

    Configuring an IES service on PE1.

Show answer and explanation

Correct answer: C

Question 4 Single choice

Which of the following describes the goal of an Extranet VPRN?

  1. A

    To reduce the number of VPRN tunnels required.

  2. B

    To allow routes to be exchanged between all, or selected, sites of one VPRN, and all, or selected, sites of a second VPRN.

  3. C

    To simplify the administration of multiple VPRNs.

  4. D

    To allow network access between the headquarter sites of each VPRN service and a shared VPRN service offered by a third party.

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Correct answer: B

Question 5 Single choice

For the Inter-AS model A VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1?

  1. A

    CE2 forwards an unlabeled IP packet to PE2 via the VPRN interface.

  2. B

    PE2 pushes one label on the IP packet and label-switches it to ASBR2.

  3. C

    ASBR2 forwards an unlabeled IP packet to ASBR1.

  4. D

    ASBR1 pushes two labels on the IP packet and label-switches the packet to PE1.

Show answer and explanation

Correct answer: B

Question 6 Single choice

Which command is used to generate the output from an Alcatel-Lucent 7750 SR shown below?

  1. A

    Show service 3

  2. B

    Show service id 3

  3. C

    Show service 3 base

  4. D

    Show service id 3 base

  5. E

    Show service 3 detail

  6. F

    Show service id 3 detail

Show answer and explanation

Correct answer: D

Question 7 Single choice

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP).

Which of the following about route distribution is FALSE?

  1. A

    The VRF 10 on CSC-PE1 includes PE1 and PE2's system addresses.

  2. B

    The global routing table of PE1 includes PE2's system address.

  3. C

    The VRF 10 on CSC-PE2 includes CEI'S address.

  4. D

    The global routing table of PE2 includes CE1's address.

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Correct answer: C

Question 8 Single choice

Which of the following statements best describes the output from an Alcatel-Lucent 7750 SR shown below?

  1. A

    The BGP session from PE to P is not operational

  2. B

    The BGP session between PEs is operational

  3. C

    The BGP session between PE and CE is not operational

  4. D

    The BGP session from PE to CE is operational

  5. E

    The BGP session between PEs is not operational

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Correct answer: D

Question 9 Single choice

When would it be appropriate to use the as-override command?

  1. A

    When sites of different VPRN customers use the same BGP AS number

  2. B

    When sites of the same VPRN customer use the same BGP AS number

  3. C

    When sites of different VPRN customers use different BGP AS numbers

  4. D

    When sites of the same VPRN customer use different BGP AS numbers

  5. E

    When the customer site AS number is the same as the provider AS number

Show answer and explanation

Correct answer: B

Question 10 Single choice

How are local CE routes associated with the appropriate VRF at the PE?

  1. A

    Based on the interface on which they are received.

  2. B

    Based on the Route Distinguisher.

  3. C

    Based on the Route Target.

  4. D

    Based on the Service Identifier.

Show answer and explanation

Correct answer: A