What is the default DSCP value for video traffic that is routed through an Expressway server?

The correct answer is D. 34. Cisco Expressway marks video traffic with DSCP value 34 by default, which corresponds to the AF41 (Assured Forwarding Class 4, Drop Precedence 1) per-hop behavior. In the DSCP decimal scale, AF41 = 34. This aligns with Cisco's recommended QoS marking for video traffic (AF41)…

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Explanation

Cisco Expressway marks video traffic with DSCP value 34 by default, which corresponds to the AF41 (Assured Forwarding Class 4, Drop Precedence 1) per-hop behavior. In the DSCP decimal scale, AF41 = 34. This aligns with Cisco's recommended QoS marking for video traffic (AF41), which gives video a high-priority queue with lower drop probability compared to best-effort traffic. For reference: voice uses EF (DSCP 46), call signaling uses CS3 (DSCP 24), and best-effort is DSCP 0. The value 36 would correspond to AF42, which is not the Expressway default for video.

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#DSCP#QoS#Video Traffic#Cisco Expressway

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