For real-time voice traffic, which DSCP value corresponds to Expedited Forwarding (EF)?

• A. DSCP value 46.
• B. DSCP value 8.
• C. DSCP value 0.
• D. DSCP value 46 is reserved for video.

Answer: (A)

Expedited Forwarding is used for real-time traffic like voice because it signals routers to treat those packets with the highest priority, minimizing queuing, delay, and jitter. The DSCP value for Expedited Forwarding is the one where the six DSCP bits are set to 101110. That pattern tells network devices to place such packets in a high-priority path, often with strict priority queuing and minimal processing delay, which is exactly what real-time voice needs.

The other options describe different, lower-priority or unmarked markings, or incorrectly claim a mapping like EF being for video. So the binary pattern 101110 is the correct EF marking for real-time voice.