Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 366

Which method provides failure detection in BFD?

Answer options

• A. long duration, low overhead
• B. short duration, low overhead
• C. long duration, high overhead
• D. short duration, high overhead

Correct answer: B

Explanation

The correct answer is B, as BFD (Bidirectional Forwarding Detection) is designed to provide rapid failure detection with minimal resource usage, hence the short duration and low overhead. Options A and C involve long durations, which would not facilitate quick failure detection, while option D suggests high overhead, which contradicts BFD's goal of efficiency.