CCDE: Cisco Certified Design Expert (Practical) — Question 65

Which interconnectivity method offers the fastest convergence in the event of a unidirectional issue between three Layer 3 switches connected together with routed links in the same rack in a data center?

Answer options

• A. Fiber Ethernet connectivity with UDLD enabled
• B. Copper Ethernet connectivity with UDLD enabled
• C. Fiber Ethernet connectivity with BFD enabled
• D. Copper Ethernet connectivity with BFD enabled

Correct answer: C

Explanation

The correct answer, C, is accurate because Bidirectional Forwarding Detection (BFD) is known for its low overhead and rapid failure detection, making it ideal for quick convergence. Options A and B utilize UDLD, which is effective but slower compared to BFD. Option D, while it uses BFD, is less optimal due to the inherent limitations of copper connections compared to fiber.