JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2024) — Question 31

What are two characteristics of IS-IS CSNPs? (Choose two.)

Answer options

• A. IS-IS CSNPs contain header information for all link-state PDUs.
• B. IS-IS CSNPs are used to request a copy of a missing link state PDU.
• C. IS-IS CSNPs are used to maintain the link-state database synchronization.
• D. IS-IS CSNPs contain header information for specific requested link-state PDUs.

Correct answer: A, C

Explanation

The correct answers are A and C because IS-IS CSNPs do indeed contain header information for all link-state PDUs and are used to maintain link-state database synchronization. Option B is incorrect as CSNPs are not used to request missing PDUs, and option D is wrong because CSNPs do not specifically target individual link-state PDUs.