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500-240 Online Practice Questions

Cisco Mobile Backhaul for Field Engineers

29 questions available · Page 1 of 3

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Question 1 Single choice

In how many seconds, after a failure of the primary or active paths when BGP Fast Reroutes enables alternate paths?

  1. A

    5 seconds

  2. B

    10 seconds

  3. C

    <1 second

  4. D

    30 seconds

Show answer and explanation

Correct answer: C

Explanation

References:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/12-2sr/irg-12-2sr-book/irg-bgp-mp-pic.html

Question 2 Single choice

Which technology is a mechanism that emulates point-to-point connection over a packet switched network?

  1. A

    LFA FRR

  2. B

    SyncE

  3. C

    PWE3

  4. D

    TDM

Show answer and explanation

Correct answer: C

Question 3 Single choice

If a router receives routes from a route reflector, packets destined to the learned prefixes by default must go through what path?

  1. A

    To the next BGP hop

  2. B

    To the BGP neighbor

  3. C

    The Route Reflextor

  4. D

    To the Next IGP hop

Show answer and explanation

Correct answer: A

Question 4 Single choice

What is the primary reason for assigning role-based communities to routes advertised by different nodes?

  1. A

    Perform policy based routing

  2. B

    Prevent routing loops

  3. C

    Reduce complexity

  4. D

    Route filtering

Show answer and explanation

Correct answer: D

Explanation

References:
https://www.cisco.com/c/dam/en/us/td/docs/solutions/Enterprise/Mobility/EPN/4_0/
EPN_4_System_Concept_Guide.pdf

Question 5 Single choice

What command is used to insert the core node area border router into the data path?

  1. A

    update-source loopback0

  2. B

    set path-selection backup 1 install

  3. C

    next-hop-self

  4. D

    insert-data-path

Show answer and explanation

Correct answer: C

Question 6 Multiple choice

Which two commands can you issue on an ASR920 router to view the status of a pseudowire? (Choose two.)

  1. A

    show pw all

  2. B

    show pw and xconnect

  3. C

    show pw all detail

  4. D

    show xconnect all detail

  5. E

    show xconnect all

Show answer and explanation

Correct answers: D, E

Question 7 Multiple choice

Which two options configures an ASR920 router as a hybrid clock? (Choose two.)

  1. A

    ptp clock boundary domain 0

  2. B

    ptp clock boundary domain 0 hybrid

  3. C

    ptp clock ordinary domain 0 hybrid

  4. D

    ptp clock ordinary domain 0

  5. E

    ptp clock

Show answer and explanation

Correct answers: B, C

Question 8 Single choice

When configuring SAToP what must the framing be configured as?

  1. A

    Framed

  2. B

    Native

  3. C

    Structured

  4. D

    Unframed

Show answer and explanation

Correct answer: B

Question 9 Single choice

What is frequency, phase, and time of day synchronization in mobile architecture?

  1. A

    is natively supported in IPv6

  2. B

    is a key requirement for the radio equipment

  3. C

    is not important

  4. D

    was only required for legacy

Show answer and explanation

Correct answer: B

Question 10 Multiple choice

High availability at the transport network layer is provided through the combination of what three technologies? (Choose three.)

  1. A

    Alternate Route

  2. B

    Loop-Free Alternate Fast Reroute

  3. C

    BGP

  4. D

    HSRP

  5. E

    BFD

  6. F

    BGP Core and Edge Fast Reroute and Edge protection

Show answer and explanation

Correct answers: A, B, F