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4A0-102 Real Exam Questions

Nokia Border Gateway Protocol for Internet Routing

152 questions available · Page 1 of 16

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Question 1 Single choice

How is the aggregator attribute handled with 32-bit AS numbers?

  1. A

    With the same method and attribute as 16-bit AS numbers.

  2. B

    With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

  3. C

    Aggregation is not yet supported with 32-bit AS numbers.

  4. D

    By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTLV.

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Correct answer: B

Question 2 Single choice

Based on the default settings for the Alcatel-Lucent 7750 SR, when a policy change is made and committed, what action is required by the user for the change to take effect?

  1. A

    Execute a command to re-evaluate all routes in the Local-RIB against the configured export policies.

  2. B

    Execute a command to re-evaluate all routes in the RIB-In against the configured import policies.

  3. C

    Execute a command to reset the BGP session with the affected peer or peers.

  4. D

    No further action is required.

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Correct answer: D

Question 3 Single choice

Which of the following best describes the relationship between locally configured policies and the direction of traffic?

  1. A

    Import policies affect the way the local AS receives traffic, while export policies affect the way it sends traffic.

  2. B

    Import policies affect the way the local AS sends traffic, while export policies affect the way it receives traffic.

  3. C

    Both import and export policies affect the way the local AS receives traffic, but not the way it sends traffic.

  4. D

    Both import and export policies affect the way the local AS sends traffic, but not the way it receives traffic.

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Correct answer: B

Question 4 Single choice

Which of the following is NOT a BGP message type?

  1. A

    Route-Refresh

  2. B

    OpenSent

  3. C

    Notification

  4. D

    Update

  5. E

    Keepalive

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Correct answer: B

Question 5 Single choice

What will happen if an update is received with an unrecognized optional non-transitive attribute?

  1. A

    The router will accept the update and send a notification.

  2. B

    The router will not accept the update and send a notification.

  3. C

    The router will accept the update and ignore the attribute.

  4. D

    The router will accept the update and propagate the attribute.

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Correct answer: C

Question 6 Single choice

Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?

  1. A

    "client1" routes will be tagged with communities "North" and "West".

  2. B

    "client1" routes will be tagged with community "West".

  3. C

    "client1" routes will be tagged with community "North".

  4. D

    "client1" routes will be rejected.

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Correct answer: C

Question 7 Single choice

Click the exhibit.

Assuming that none of the routers within AS 65200 is configured with next-hop-self", what will the BGP update for the 192.168.0.1/27 prefix contain when it arrives at router B?

  1. A

    AS Path of 65200 65100, Next Hop of router A.

  2. B

    AS Path of 65200 65100, Next Hop of router E.

  3. C

    AS Path of 65100, Next Hop of router E.

  4. D

    AS Path of 65100, Next Hop of router A.

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Correct answer: C

Question 8 Single choice

What is the default Alcatel-Lucent 7750 SR TTL of a BGP advertisement between confederation members?

  1. A

    1

  2. B

    32

  3. C

    64

  4. D

    255

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Correct answer: A

Question 9 Single choice

Click the exhibit.

Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP sessions.

Which of the following configurations is required on router A so that router B can exchange traffic with router D?

  1. A

    Option A

  2. B

    Option B

  3. C

    Option C

  4. D

    Option D

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Correct answer: A

Question 10 Single choice

From what range are 16-bit private AS numbers selected?

  1. A

    64496 ?64511

  2. B

    1 ?56319

  3. C

    64512-65534

  4. D

    64513-65535

  5. E

    There are no defined private AS numbers; there are only private IP addresses.

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Correct answer: C