Which two are important benefits of applying QoS to IP networks? (Choose two)

A.
QoS manages packet loss during periods of bursty congestion.

B.
QoS allows network managers to control usage patterns of network applications.

C.
QoS can solve traffic problems on low bandwidth, high-latency, high-loss WAN links.

D.
QoS facilities the integration of differing traffic types such as voice, video, and data into a single infrastructure.

E.
QoS can provide performance enhancements for commercial application issues such as server sizing and tuning.