Cisco Certified Network Associate (200-301 CCNA) – Question544

In QoS, which prioritization method is appropriate for interactive voice and video?

A. traffic policing
B. round-robin scheduling
C. low-latency queuing
D. expedited forwarding

Correct Answer: C

Explanation:

Explanation:
Low Latency Queuing (LLQ) is the preferred queuing policy for VoIP audio. Given the stringent delay/jitter sensitive requirements of voice and video and the need to synchronize audio and video for CUVA, priority (LLQ) queuing is the recommended for all video traffic as well. Note that, for video, priority bandwidth is generally fudged up by 20% to account for the overhead.