200-301 Question #469: Real Exam Question with Answer & Explanation

The correct answer is C: PQ. Many popular QoS techniques that serve data traffic very well, such as WFQ and RED, are ineffective for voice applications. FIFO (first-in, first-out). FIFO entails no concept of priority or classes of traffic. With FIFO, transmission of packets out the interface occurs in the or

Submitted by the_admin· Mar 5, 2026IP Services

Question

Which QoS tool is used to optimize voice traffic on a network that is primarily intended for data traffic?

Options

AFIFO
BWFQ
CPQ
DWRED

Explanation

Many popular QoS techniques that serve data traffic very well, such as WFQ and RED, are ineffective for voice applications. FIFO (first-in, first-out). FIFO entails no concept of priority or classes of traffic. With FIFO, transmission of packets out the interface occurs in the order the packets arrive.

Topics

#QoS queuing#Priority Queuing#Voice optimization

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