Which configuration change is need for an IS-IS Level 1 adjacency between R1 and R2?

Referring to exhibit, which configuration change is need for an IS-IS Level 1 adjacency between R1 and R2?


A. Enable Level 2 on R1’s ge-0/0/1 interface.
B. Disable Level 2 on R2’s ge-0/0/1 interface.
C. Configure the lo0 family ISO address 49.0002.0010.0042.0002.00 on R2.
D. Configure the lo0 family ISO address 49.0002.0010.0042.0002.00 on R1.

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