CCDE: Cisco Certified Design Expert (Written) — Question 53

Which two mechanisms ensure that a network design provides fast path failure detection? (Choose two.)

Answer options

• A. BFD
• B. fast hello packets
• C. UDLD
• D. IP Cisco Express Forwarding

Correct answer: A, B

Explanation

BFD (Bidirectional Forwarding Detection) and fast hello packets are both designed to quickly identify link failures, allowing for rapid failover. The other options, while useful for network operations, do not specifically focus on the speed of failure detection like BFD and fast hello packets do.