— Exhibit –

— Exhibit —
Refer to the Exhibit.
The exhibit displays an IS-IS topology and IS-IS-related outputs for R1 and R2. The IS-IS
adjacencies between R2 and R3 are in the Up state, but the IS-IS adjacency between R1 and R2

does not attempt to form.
Which two actions will ensure that all IS-IS adjacencies (R1 to R2 and R2 to R3) reach and stay in
the Up state? (Choose two.)

A.
Change the area ID on R2 to 49.1111.

B.
Enable Level 2 operations for all of R1’s interfaces.

C.
Enable Level 1 operations for all of R2’s interfaces.

D.
Change the selector value on R1 to 01.

Explanation: