Nokia Nokia Certifications 4A0-102 Questions & Answers

• Question 91:

  Click the exhibit.

  

  Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between ISP 1 and the other ISPs?

  A. ISP 1 has a peering relationship with ISP 2 and ISP 4.

  B. ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.

  C. ISP 1 has a peering relationship with ISP 2 and ISP 3.

  D. ISP 1 has a transit relationship with ISP 2 and ISP 4.

  E. ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.

  Correct Answer: B

• Question 92:

  Which of the following is NOT considered an option of import policies?

  A. Preventing unwanted NLRI from entering the AS.

  B. Filtering NLRI based on AS Path or prefix-lists,

  C. Modifying the local preference of route advertisements.

  D. Setting MED values of route advertisements.

  Correct Answer: D

• Question 93:

  Which of the following regarding the atomic aggregate attribute is TRUE?

  A. It is an optional transitive attribute.

  B. It is an optional non-transitive attribute.

  C. The atomic aggregate flag is always set if the aggregator attribute is set.

  D. The atomic aggregate flag is always set if the AS Path information is lost due to aggregation.

  Correct Answer: D

• Question 94:

  Click the exhibit.

  

  Which of the following is a valid confederation configuration for Router R2?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: C

• Question 95:

  Which of the following organizations would an ISP based in Europe approach for an IP prefix assignment?

  A. ARIN

  B. ICANN

  C. RIPE NCC

  D. LACNIC

  E. APNIC

  Correct Answer: C

• Question 96:

  A router receives two routes from its neighbors: a route from OSPF for 10.0.0.0/24, and a route from BGP for 10.0.0.0/8. Both routes have reachable next hops.

  Which of the following is TRUE?

  A. Only the BGP route is in the route table.

  B. Both routes are in the route table.

  C. None of the routes is in the route table.

  D. Only the OSPF route is in the route table.

  Correct Answer: B

• Question 97:

  Which of the following is TRUE if the local state of BGP is OpenConfirm?

  A. The local system has received a Keepalive message and is ready to exchange updates.

  B. The local system is exchanging Update messages with its neighbor.

  C. The local system has sent a Keepalive message to its neighbor and is waiting to receive one back.

  D. The local system has sent an Open message to its neighbor and is waiting to receive one back.

  Correct Answer: C

• Question 98:

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

  

  A. "client2" routes will be tagged with communities "West" and "North".

  B. "client2" routes will be tagged with communities "West", "North" and "South".

  C. "client2" routes will be tagged with community "West".

  D. "client2" routes will be tagged with community "South".

  Correct Answer: C

• Question 99:

  Which of the following statements regarding BGP FRR is FALSE?

  A. The router must receive several BGP routes to compute a backup path.

  B. BGP FRR can be triggered by BFD.

  C. The backup path can use the same next hop as the primary path.

  D. BGP peer-tracking can be used to improve BGP FRR failure detection times.

  Correct Answer: C

• Question 100:

  Which of the following is NOT a goal of BGP routing policies?

  A. To protect external networks from instability.

  B. To communicate the architecture of an AS to external ASs.

  C. To protect the local AS and other external ASs from bad NLRI.

  D. To optimize ingress and egress traffic patterns to best serve the users of the AS.

  Correct Answer: B