What are two characteristics of priority queueing? (Choose two.)

The correct answer is D. It places traffic Into one of four queues. E. It ensures that critical traffic queues are serviced first. Priority Queueing (PQ) is a classic Cisco IOS queueing mechanism that places traffic into exactly four fixed queues: High, Medium, Normal, and Low (answer D). The scheduler is strict - it always services all packets in the High queue before moving to Medium, then Normal, then…

Infrastructure and Quality of Service

Question

Options

AIt guarantees bandwidth for user-defined traffic classes.
BIt applies strict priority to user-defined traffic classes.
CIt allocates an equal share of bandwidth to each flow.
DIt places traffic Into one of four queues.
EIt ensures that critical traffic queues are serviced first.

How the community answered

(42 responses)

B
2% (1)
C
2% (1)
D
95% (40)

Explanation

Priority Queueing (PQ) is a classic Cisco IOS queueing mechanism that places traffic into exactly four fixed queues: High, Medium, Normal, and Low (answer D). The scheduler is strict - it always services all packets in the High queue before moving to Medium, then Normal, then Low. This means critical traffic in the highest-priority queue is always serviced first (answer E). PQ does NOT guarantee specific bandwidth allocations (that is CBWFQ), does not apply user-defined classes with strict priority (that describes LLQ/PQ-CBWFQ), and does not allocate equal bandwidth per flow (that is WFQ).

Topics

#Priority Queueing#QoS#Queueing mechanisms#Traffic management

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