Which queue must an engineer configure for control and BFD traffic for convergence on a WAN Edge router?

In Cisco SD-WAN QoS, queue 0 is specifically designated for high-priority control plane traffic, including OMP and BFD. This ensures that critical network protocols receive preferential treatment, minimizing latency and jitter to maintain network stability and achieve rapid convergence.

Queue 1 is typically used for high-priority data applications like voice, not control plane protocols.

Queue 2 is generally reserved for medium-priority data applications such as video, which is not suitable for critical control and BFD traffic.

Queue 7 is commonly used for best-effort or scavenger traffic, which receives the lowest priority and would be detrimental to control and BFD traffic's performance.