In which two ways does QoS provide better network service VoIP quality? (Choose two.)
A. improves loss characteristics
B. increases packet size
C. decreases traffic proprieties
D. manages network congestion
E. minimizes priority queueing
Which two ways does QoS provide better network service VoIP quality?
•Supporting dedicated bandwidth
•Improving loss characteristics
•Avoiding and managing network congestion
•Shaping network traffic
•Setting traffic priorities across the network
https://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/qos_solutions/QoSVoIP/QoSVoIP.html
Per Cisco it should be AD