Question 336 of 477 from exam JN0-360: Juniper Networks Certified Internet Specialist

Q: Click the Exhibit button.Referring to the exhibit, R1 and R2 are unable to form an IS-IS adjacency on interface ge-0/0/1.0. The ge-0/0/1.0 interface has the appropriate address families enabled.Which two actions will resolve the problem and allow the adjacency to come up? (Choose two.)

Enable Level 2 adjacencies on R1.Change the R2 loopback interface address to 49.3154.2222.2222.2222.00.

Prev Question Next Question

Question

Click the Exhibit button.

Referring to the exhibit, R1 and R2 are unable to form an IS-IS adjacency on interface ge-0/0/1.0. The ge-0/0/1.0 interface has the appropriate address families enabled.

Which two actions will resolve the problem and allow the adjacency to come up? (Choose two.)

Answers

A. Change the R2 loopback interface address to 49.3154.1111.1111.1111.00.

B. Enable Level 2 adjacencies on R1.

C. Enable Level 1 adjacencies on R1.

D. Change the R2 loopback interface address to 49.3154.2222.2222.2222.00.

Show Answer

Explanations

Click on the arrows to vote for the correct answer

A. B. C. D.

B: We need to enable level 2 adjacencies on R1, as an L1 adjacency is formed only with routers in the same area.An L2 adjacency is formed with routers in the same area or a different area.

D: IS-IS uses ISO network addresses. Each address identifies a point of connection to the network, such as a router interface, and is called a network service access point (NSAP). For example, the NET address 49.0001.1921.6800.1001.00 consists of the following parts:

49AFI

0001Area ID

1921.6800.1001System identifier

00Selector

Incorrect Answers:

C: Level 1 adjacencies on R1 are already enabled.

http://www.subnetzero.info/2013/08/23/is-is-levels-and-adjacencies/

Prev Question Next Question