Free Cisco 300-420 Actual Exam Questions - Question 12 Discussion

D imo. Priority queuing makes sense since SD-WAN Edge routers need to handle critical traffic fast, like voice or control signals. The other options are more about complex fairness or scheduling, but Edge devices often prioritize important packets immediately to reduce latency.

It’s C because the 1P-4Q-2T structure fits Cisco’s approach with multiple queues and shaping, unlike FIFO or simple priority which are too basic for SD-WAN Edge routers.

B/C? LLQ+WFQ is a classic QoS combo for handling priority and fairness, but 1P-4Q-2T seems more tailored for Cisco’s specific SD-WAN routers’ multi-queue approach. It depends if they want a general answer or vendor-specific.

It’s C. The 1P-4Q-2T setup matches the multi-queue and tiered scheduling Cisco SD-WAN Edge routers use, which is more advanced than just plain priority or FIFO.

C imo, because 1P-4Q-2T is designed for complex traffic management which fits SD-WAN’s need to handle multiple traffic classes efficiently. FIFO and simple priority seem too basic for this use case.

B tbh, I’m pretty sure SD-WAN Edge routers use something like LLQ+WFQ for QoS. But does the question mean a specific vendor or just general SD-WAN setup? That might change things. Also, is this referring to hardware or software-based queuing? Would help to know the context a bit more.