A customer requires QoS to support multimedia conferencing over MPLS. The network architect chooses to use per-hop behavior. Which solution must the architect use to classify and mark traffic travelin

DSCP AF3 represents a lower priority class than AF4, which is generally preferred for multimedia conferencing, and this option also omits WRED, which is crucial for congestion avoidance.

DSCP AF4 is a standard classification for high-priority video or multimedia traffic, ensuring it receives preferential treatment. Coupling this with a bandwidth queue mechanism guarantees dedicated resources, while Weighted Random Early Detection (WRED) uses the DSCP value to probabilistically drop lower-priority packets during congestion, protecting the critical conferencing traffic from loss and maintaining quality.

DSCP AF3 represents a lower priority class than AF4, which is typically used for multimedia conferencing to ensure adequate bandwidth and low latency.

While DSCP AF4 is appropriate for multimedia conferencing, this option omits the use of WRED, a critical congestion avoidance mechanism for maintaining quality during periods of high network utilization.