Nokia Nokia Certifications 4A0-102 Questions & Answers

• Question 51:

  Click the exhibit.

  

  If router A originates an update for prefix 192.168.0.1/27, what will the update contain when it reaches router B?

  A. AS Path of 65200, local-preference of 100.

  B. AS Path of 65200, local-preference of None.

  C. Null AS Path, local-preference of 100.

  D. Null AS Path, local-preference of None.

  Correct Answer: C

• Question 52:

  Click the exhibit.

  

  AS 65550 owns CIDR block 10.64.0.0/12. Router R3 is advertising Client1 and Client2 networks into BGP. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "summary-only" enabled. Which of the following routes are received by router R7?

  A. Client1, Client2 and the aggregate.

  B. Only the aggregate.

  C. Only Client1 and the aggregate.

  D. Only Client2 and the aggregate.

  Correct Answer: C

• Question 53:

  Consider two Alcatel-Lucent 7750 SRs in AS 65540. Router R1 has system address 10.10.10.1, and router R2 has system address 10.10.10.2. Which of the following configurations on router R2 can establish a BGP session with router R1?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B

• Question 54:

  Which of the following statements regarding the Originator_ID attribute is TRUE?

  A. The BGP router that originates an update sets the Originator_ID.

  B. The Originator_IDis set to the ClusterJD of the advertising router reflector.

  C. Both confederation and route reflector topologies use the Originator_ID.

  D. A BGP router ignores an update that contains its own BGP router ID as Originator_ID.

  Correct Answer: D

• Question 55:

  An Alcatel-Lucent 7750 SR receives a route from an iBGP peer with a MED value of 500.

  What MED value is sent to eBGP peers?

  A. 100

  B. The IGP cost

  C. 500

  D. None

  Correct Answer: D

• Question 56:

  Click the exhibit.

  

  Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into ISP X, which of the following best describes the route advertisement within ISP X?

  A. Router C sends the update to routers E and F only.

  B. Router C sends the update to routers D, E and F.

  C. Router C sends the update to routers A, B, E and F.

  D. Router C sends the update to routers A, B, D, E and F.

  Correct Answer: D

• Question 57:

  Which of the following regarding the withdrawal of routes from one BGP speaker to another is TRUE?

  A. An update message is used. Only a single prefix can be withdrawn at a time.

  B. An update message is used. Multiple prefixes can be withdrawn at a time.

  C. A withdraw message is used. Only a single prefix can be withdrawn at a time.

  D. A withdraw message is used. Multiple prefixes can be withdrawn at a time.

  Correct Answer: B

• Question 58:

  Which of the following behaviors regarding the modification of BGP attributes within a confederation is TRUE?

  A. Next Hop is modified when crossing member AS boundaries within a confederation.

  B. Origin Code is modified when crossing member AS boundaries within a confederation.

  C. AS Path is modified when crossing member AS boundaries within a confederation.

  D. None of the well known mandatory attributes is modified within a confederation.

  Correct Answer: C

• Question 59:

  Click on the exhibit.

  

  AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. Which routers must be configured with the "configure router bgp igp-shortcuts rsvp-te" command?

  A. Routers R6, R1, R4 and R5.

  B. Routers R1and R4.

  C. Routers R1, R2, R3 and R4.

  D. Routers R2 and R3.

  Correct Answer: B

• Question 60:

  A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a local preference of 100. Which route will appear in the RIB-out?

  A. Only the first route will appear in the RIB-Out.

  B. Only the second route will appear in the RIB-Out.

  C. Only the third route will appear in the RIB-Out.

  D. All routes will appear in the RIB-Out.

  Correct Answer: A