Nokia Nokia Certifications 4A0-102 Questions & Answers

• Question 121:

  Click the exhibit.

  

  Routers RR1 and RR2 are route reflectors with the same cluster-ID. How many updates for prefix 192.168.1.0/27 are received at router RR1?

  A. 1

  B. 2

  C. 3

  D. 4

  Correct Answer: A

• Question 122:

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

  

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

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

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

  D. "client1" routes will be rejected.

  Correct Answer: C

• Question 123:

  Click the exhibit.

  

  Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of

  200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?

  A. On router R5 only.

  B. On either router R1or R2.

  C. On both routers R1and R2.

  D. On all routers R1, R2 and R5.

  Correct Answer: B

• Question 124:

  Click the exhibit.

  

  AS 65100 is advertising 192.168.1.0/27 into BGP. Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R7?

  A. 65206 65202 65100

  B. (65206 65202)65100

  C. (65204 65206 65202) 65100

  D. (65200) 65100

  Correct Answer: B

• Question 125:

  Click the exhibit.

  

  Assuming router A is configured with "next-hop-self", what does the BGP update for prefix 192.168.0.1/27 contain when it arrives at router B?

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

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

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

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

  Correct Answer: C

• Question 126:

  What kind of BGP attribute is the Multi_Exit_Disc?

  A. Optional transitive attribute.

  B. Optional non-transitive attribute.

  C. Well-known mandatory attribute.

  D. Well-known discretionary attribute.

  Correct Answer: B

• Question 127:

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

  A. The router will accept the update and send a notification.

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

  C. The router will accept the update and ignore the attribute.

  D. The router will accept the update and propagate the attribute.

  Correct Answer: C

• Question 128:

  Which of the following statements regarding BGP Add-Paths is FALSE?

  A. Add-Paths allows non-best paths to be advertised to a peer.

  B. Add-Paths capabilities are exchanged between peers after the BGP session is established.

  C. A BGP speaker must advertise the capability to receive multiple paths from its peer.

  D. A BGP speaker must advertise the capability to send multiple paths to its peer.

  Correct Answer: B

• Question 129:

  Which of the following about a single-homed AS is FALSE?

  A. A single-homed AS is also known as a stub AS.

  B. A single-homed AS is also known as a leaf AS.

  C. A single-homed AS uses either the ISP AS number or a private AS number.

  D. A single-homed AS can be either transit or non-transit

  Correct Answer: D

• Question 130:

  Click the exhibit.

  

  Router R3 is configured with an import policy to reject updates with an AS Path matching the regular expression ".+ 65540". Which of the following regarding updates originating in AS 65540 is TRUE?

  A. Router R3 rejects all updates originating in AS 65540.

  B. Router R3 accepts updates received from router R1 and rejects updates transited through router R2.

  C. Router R3 accepts updates transited through router R2 and rejects updates received from router R1.

  D. Router R3 accepts updates from both routers R1 and R2.

  Correct Answer: B