A network design team is experiencing sustained congestion on access and distribution uplinks. QoS has already been implemented and optimized, and it is no
longer effective in ensuring optimal network performance.
Which two actions can improve network performance? (Choose two.)

A.
Reconfigure QoS based on the IntServ model.

B.
Configure selective packet discard to drop noncritical network traffic.

C.
Implement higher-speed uplink interfaces.

D.
Bundle additional uplinks into logical EtherChannels.

E.
Utilize random early detection to manage queues.