Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 633

In a campus network design, what are two benefits of using BFD for failure detection? (Choose two.)

Answer options

• A. BFD speeds up routing convergence time.
• B. BFD is an efficient way to reduce memory and CPU usage.
• C. BFD provides fault tolerance by enabling multiple routers to appear as a single virtual router.
• D. BFD provides path failure detection in less than a second.
• E. BFD enables network peers to continue forwarding packets in the event of a restart.

Correct answer: A, D

Explanation

The correct answers are A and D because BFD significantly speeds up routing convergence, enabling quick recovery from failures, and it can detect path failures in less than a second. Options B, C, and E do not accurately represent BFD's primary functions, as BFD is not specifically designed for CPU/memory efficiency, does not create virtual routers, and does not focus on packet forwarding during restarts.