Comprehensive and Detailed In-Depth Explanation:
TheStrict Priority (SP) scheduling algorithmalways gives preference to high-priority queues.
A:Correct. SP scheduling may lead toqueue starvationbecause low-priority queues might never get serviced if high-priority traffic is constant.
B:Correct. SP always schedules thehighest-priority queue first.
C:Correct. Among multiple low-priority queues, if SP is combined with FIFO (First In, First Out), packets that arrive first are forwarded first.
D:Incorrect. The SP algorithmdoes not guarantee minimum bandwidthfor lower-priority queues. It prioritizes high-priority queues regardless of bandwidth configuration, which can lead to starvation of lower-priority traffic. To ensure minimum bandwidth, aWeighted Fair Queuing (WFQ)orCBWFQ (Class-Based Weighted Fair Queuing)algorithm would be more suitable.
[Reference:, Huawei HCIE Datacom Official Certification Guide, Huawei QoS Configuration and Implementation Guide, , , ]
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