Which two actions must the engineer perform when implementing traffic shaping on the network in order to accomplish this task?

An engineer needs to implement QOS mechanism on customer’s network as some applications going over the internet are slower than others.

Which two actions must the engineer perform when implementing traffic shaping on the network in order to accomplish this task? (Choose two)
A . Configure a queue with sufficient memory to buffer excess packets.
B . Configure the token values in bytes.
C . Implement packet remarking for excess traffic.
D . Implement a scheduling function to handle delayed packets.
E . Configure a threshold over which excess packets are discarded.

Answer: A,D