Nokia Nokia Certifications 4A0-101 Questions & Answers

• Question 151:

  Click the exhibit button.

  

  If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 will receive two routes to 192.168.3.0/24. What will be the preference of these two routes? Assume that all IS-IS routers are L1/L2 capable and are in the same area. Choose two answers.

  A. The OSPF internal preference

  B. The IS-IS Level 1 internal preference

  C. The IS-IS Level 2 internal preference

  D. The OSPF external preference

  E. The IS-IS Level 2 external preference

  F. The IS-IS Level 1 external preference

  Correct Answer: BD

• Question 152:

  Refer to the exhibit below. The routers have an established IS-IS L2 adjacency on which IPv4 system addresses are exchanged. An operator successfully configures multi-topology IS-IS routing so that the IPv6 system addresses are also exchanged between routers. Which of the following statements best describes the number of IS-IS adjacencies and the number of LSPs in the LSDB of R1 AFTER IPv6 has been configured?

  

  A. R1 has one IS-IS adjacency and one LSP.

  B. R1 has one IS-IS adjacency and two LSPs.

  C. R1 has one IS-IS adjacency and four LSPs.

  D. R1 has two IS-IS-adjacencies and two LSPs

  E. R1 has two IS-IS adjacencies and four LSPs

  Correct Answer: B

• Question 153:

  Which of the following statements are true? Choose two answers.

  A. Route redistribution is only needed if Internet access is a requirement.

  B. Route filtering is the process of attaching data path filters to router interfaces.

  C. Route filtering involves deciding whether to permit or deny certain routing updates from being accepted into, or distributed out of, the route-selection process.

  D. Redistribution is needed for exchanging routes from one routing protocol to another.

  E. OSPF routers that are redistributing routes must be configured as ABRs.

  Correct Answer: CD

• Question 154:

  When IS-IS is electing a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same?

  A. The system ID

  B. The loopback address

  C. The sequence number of the Hello packet

  D. The device that first initiated communication becomes the DIS

  E. The highest interface MAC address

  Correct Answer: E

• Question 155:

  Which of the following statements regarding OSPF routing updates on a point-to-point link is true?

  A. On a point-to-point link, there is no need for a DR and BDR election; all routing updates are sent to

  224.0.0.5.

  B. On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.

  C. On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.

  D. On a point-to-point link, there is no need for a DR and BDR election. All routing updates are sent to the unicast address of the neighbor's interface.

  Correct Answer: A

• Question 156:

  Click the exhibit button.

  

  Assuming that the router ID of the router shown is 10.10.10.4, which of the following statements regarding the CLI output is true?

  A. The router with router ID 10.10.10.5 is an ASBR.

  B. The router with router ID 10.10.10.3 is an ASBR.

  C. The router with router ID 10.10.10.5 originated the AS summary LSA in its own area.

  D. The router with router ID 10.10.10.4 is in the same area as the router with router ID 10.10.10.5.

  Correct Answer: A

• Question 157:

  Click the exhibit button. Assuming point-to-point links, which of the following statements is true?

  

  A. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers

  B. Routers R1, R2, and R4 are L1/L2 routers. Router R3 is an L1 router,

  C. Routers R1, R2, and R3 are L2 routers. Router R4 is an L1 router,

  D. Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers

  Correct Answer: D

• Question 158:

  Refer to the exhibit below. IS-IS IPv6 routing is configured in the network with globally routed addresses as shown. How many routes will R4 have in its IPv6 route table?

  

  A. 1

  B. 2

  C. 3

  D. 4

  E. 6

  F. 7

  Correct Answer: B

• Question 159:

  A router is configured with the command "configure router ecmp 4". There are two best paths to a given destination with an equal cost in the IGP. Which of the following best describes the handling of traffic to this destination?

  A. The router installs two routes for the destination with two different next hops. A hashing algorithm is used to distribute traffic over the two paths.

  B. The router installs two routes for the destination with two different next hops. Traffic is evenly distributed over the two paths.

  C. The router installs four routes for the destination with four different next hops. A hashing algorithm is used to distribute traffic over the four paths.

  D. The router installs four routes for the destination with four different next hops. Traffic is evenly distributed over the four paths.

  E. The router installs one route for the destination. Traffic is evenly distributed over the two paths.

  Correct Answer: A

• Question 160:

  Click the exhibit button.

  

  Given the topology and the route-tables shown, which of the following is most likely to be the configuration on router R1?

  

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: D