Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 846

In Cisco SD-WAN, which protocol is used to measure link quality?

Answer options

• A. IPsec
• B. OMP
• C. RSVP
• D. BFD

Correct answer: D

Explanation

BFD (Bidirectional Forwarding Detection) is the correct answer because it is specifically designed to monitor the status of links and detect failures quickly. IPsec is a security protocol, OMP is used for control plane communication, and RSVP is primarily for resource reservation, so they do not measure link quality.