Which two statements about policing, queueing, and scheduling are true? (Choose two.) 

Answer options:

A. The WRED algorithm is reactive approach only to a traffic congestion.
B. Policing is the monitoring of data rates for a particular class of traffic. The device can also monitor associated sizes.
C. You can apply weighted random early detection to a class of traffic, which allows packets to be dropped based on the CoS field.
D. You can schedule traffic by imposing a maximum data rate on a class of traffic, so that excess packets are dropped.

BC