Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 138

Which two IS-IS parameters must match before two Level 2 peers can form an adjacency? (Choose two.)

Answer options

• A. hello timer setting
• B. authentication settings
• C. area ID
• D. system ID
• E. MTU

Correct answer: B, E

Explanation

The correct answers are B and E because both the authentication settings and the MTU must match for adjacency formation between Level 2 IS-IS peers. The hello timer setting, area ID, and system ID do not need to be the same for the adjacency to be established.