Nokia Nokia Certifications 4A0-102 Questions & Answers

• Question 141:

  Click the exhibit.

  

  An update travels from AS 137000 to AS 135000, traversing both 32-bit and 16-bit AS Paths. What AS Path is seen by AS 200?

  A. 140000 137000

  B. 137000 140000

  C. 23456 23456

  D. 200 140000 137000

  Correct Answer: C

• Question 142:

  Click the exhibit.

  

  Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

  Assuming that router R6 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R5?

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: C

• Question 143:

  Click the exhibit.

  

  Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions. Given the following iBGP configuration on router A, what is the Next Hop for prefix 2001:DB8:A:401::1/128 on router B?

  

  A. The IPv6 link-local address of the router D interface towards router A.

  B. The IPv6 link-local address of the router A interface towards router D.

  C. The IPv6 global address of router A.

  D. The IPv6 global address of router D.

  Correct Answer: C

• Question 144:

  Which of the following is TRUE if a BGP session state is Connect?

  A. BGP is waiting for the TCP connection to be completed.

  B. BGP has established a TCP connection, and an Open message has been sent to that neighbor.

  C. The BGP session has been interrupted, and a TCP connection is being re-established.

  D. BGP has failed to establish a TCP connection to that neighbor, and ConnectRetry has been reset to zero.

  Correct Answer: B

• Question 145:

  Which of the following statements regarding the Internet is FALSE?

  A. It is a global network relying on interconnections provided by Internet service providers.

  B. It is a continuous and interconnected set of public IP networks, advertised and shared across the globe.

  C. It is a settlement-free global network that provides interconnection between Internet service providers.

  D. It is a network that allows any Internet service provider to reach every other Internet service provider in the world.

  Correct Answer: C

• Question 146:

  The following policies are configured and exported using "export "Policy-1" "Policy-2"". Assuming both "Client-1" and "Client-2" are properly defined on the router, which routes are advertised?

  

  A. Client-1 routes only.

  B. Client-2 routes only.

  C. Client-1 and Client-2 routes.

  D. Neither Client-1 nor Client-2 routes.

  Correct Answer: C

• Question 147:

  Which of the following best describes the purpose of advertise-external?

  A. It enables a BGP speaker to advertise multiple external routes to iBGP peers.

  B. It enables a BGP speaker to advertise its best external route to iBGP peers when the best overall route is internal.

  C. It enables a BGP speaker to advertise its best external route to eBGP peers without an import policy.

  D. It enables a BGP speaker to advertise its best internal route to eBGP peers without an export policy.

  Correct Answer: B

• Question 148:

  Click the exhibit.

  

  AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "as-set" enabled.

  Which of the following is TRUE regarding the aggregate route received by router R7?

  A. The AS Path is set to 65540, and the Atomic Aggregate flag is set.

  B. The AS Path is set to 65540 65550, and the Atomic Aggregate flag is set.

  C. The AS Path is set to 65540 65550, and the Atomic Aggregate flag is not set.

  D. The AS Path is set to 65550, and the Atomic Aggregate flag is not set.

  Correct Answer: C

• Question 149:

  Which of the following about default BGP behavior is FALSE?

  A. Next Hop is modified in iBGP updates.

  B. Origin Code is NOT modified in eBGP updates.

  C. AS Path is modified in eBGP updates.

  D. Local Preference is NOT modified in iBGP updates.

  Correct Answer: A

• Question 150:

  Which of the following is the minimum requirement for an AS to be considered multi- homed?

  A. A single connection to a single service provider.

  B. Two connections to a single service provider.

  C. Two connections to two different service providers.

  D. Multiple connections to different service providers.

  Correct Answer: B