NSE 7 — Enterprise Firewall — Question 30

Which two statements about the BFD parameter in BGP are true? (Choose two.)

Answer options

• A. It detects only two-way failures.
• B. The two routers must be connected to the same subnet.
• C. It allows failure detection in less than one second.
• D. It is supported for neighbors over multiple hops.

Correct answer: C, D

Explanation

Option C is correct because BFD is designed to provide rapid failure detection, often in less than one second. Option D is also correct as BFD can function with BGP neighbors that are not directly connected, supporting multiple hops. Options A and B are incorrect because BFD can detect more than just two-way failures and does not require routers to be on the same subnet.