CCNA: Cisco Certified Network Associate — Question 540

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

Answer options

• A. WRED
• B. FIFO
• C. PQ
• D. WFQ

Correct answer: C

Explanation

PQ, or Priority Queuing, is specifically designed to ensure that voice traffic is prioritized over other types of data, making it the correct choice for optimizing voice on a data-centric network. WRED, FIFO, and WFQ do not prioritize voice packets in the same manner, which makes them less suitable for this scenario.