Under which network conditions is an outbound QoS policy that is applied on a router WAN interface most beneficial?

A. under all network conditions
B. under network convergence conditions
C. under traffic classification and marking conditions
D. under interface saturation conditions

Under which network conditions is an outbound QoS policy that is applied on a router WAN interface most beneficial?

A. under all network conditions
B. under network convergence conditions
C. under traffic classification and marking conditions
D. under interface saturation conditions

Correct Answer: D

An outbound QoS policy that is applied on a router WAN interface can be beneficial under different network conditions, but it is most useful under interface saturation conditions. Interface saturation occurs when the traffic on an interface exceeds the available bandwidth, leading to congestion and delays.