JNCIP-SP: Juniper Networks Certified Professional – Service Provider (2023) — Question 58

In IS-IS. which two statements are correct about the designated intermediate system (DIS) on a multi-access network segment? (Choose two.)

Answer options

• A. On the multi-access network, each router forms an adjacency to every other router on the segment.
• B. On the multi-access network, each router only forms an adjacency to the DIS.
• C. A router with a priority of 1 wins the DIS election over a router with a priority of 10.
• D. A router with a priority of 10 wins the DIS election over a router with a priority of 1.

Correct answer: A, D

Explanation

Option A is correct because in a multi-access segment, all routers need to establish adjacencies to communicate effectively. Option D is also correct since a router with a higher priority (10) will win the DIS election over one with a lower priority (1). Options B and C are incorrect as they misrepresent the adjacency formation and priority rules.