H12-891_V1.0 · Question #546
In the HQoS scenario, which of the following queue scheduling methods can be used for flow queues and user queues? (Multiple choice)
The correct answer is A. WFQ+PQ C. WFQ D. PQ. In HQoS (Hierarchical QoS) architecture, flow queues and user queues support WFQ (weight-based fair sharing), PQ (strict priority for latency-sensitive traffic), and the hybrid WFQ+PQ (which combines priority lanes with weighted fair queues for remaining traffic) - making A, C…
Question
In the HQoS scenario, which of the following queue scheduling methods can be used for flow queues and user queues? (Multiple choice)
Options
- AWFQ+PQ
- BWFQ+WRR
- CWFQ
- DPQ
How the community answered
(60 responses)- A72% (43)
- B28% (17)
Explanation
In HQoS (Hierarchical QoS) architecture, flow queues and user queues support WFQ (weight-based fair sharing), PQ (strict priority for latency-sensitive traffic), and the hybrid WFQ+PQ (which combines priority lanes with weighted fair queues for remaining traffic) - making A, C, and D all valid scheduling options at these levels.
Option B (WFQ+WRR) is incorrect because WRR (Weighted Round Robin) is not a supported scheduling method for flow queues or user queues in HQoS; WRR applies at other levels of the HQoS hierarchy (such as channel or trunk queues), not at the per-flow or per-user queue levels.
Memory tip: Think of it as "flow and user queues speak the P-W language" - PQ, WFQ, and their combo WFQ+PQ. Any option involving WRR at these levels is the odd one out, since WRR lives higher up the HQoS tree.
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