An enterprise has three types of services. Voice and video services are key services and need to be guaranteed, and FTP services are non-key services. Which of the following scheduling modes is optimal for satisfying the service requirements?
A.
WFQ scheduling is configured for IP voice, video, and FTP download services.
B.
PQ scheduling is configured for IP voice and video services, and WFQ scheduling is configured for FTP download services.
C.
LPQ scheduling is configured for IP voice services, PQ scheduling is configured for video services, and WFQ scheduling is configured for FTP download services.
D.
PQ scheduling is configured for IP voice, video, and FTP download services.
PQ (Priority Queuing) ensures low-latency services like voice and video are prioritized.
WFQ (Weighted Fair Queuing) fairly allocates remaining bandwidth to services like FTP.
Option B provides a balanced approach: guarantees for voice/video via PQ, and fairness for FTP via WFQ.
Exact Extract - Huawei HCIE-Datacom QoS Module:
“Voice and video traffic should be handled by PQ to minimize delay and jitter. Non-critical services such as FTP should be placed in WFQ queues to ensure bandwidth fairness.”
[Reference:, Huawei HCIE-Datacom Study Guide – QoS Mechanisms and Scheduling, Huawei QoS Configuration Guide – Traffic Classification and Scheduling Models, , ]
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