What are the three primary challenges when dealing with a converged network that QoS can help solve? (Choose three.)

A.
delay

B.
packet loss

C.
server congestion

D.
lack of bandwidth

E.
port overutilization

Explanation:

QoS can solve following issues:
1) Lack of bandwidth – multiple flows are contesting for a limited amount of bandwidth
2) Too much delay – packets have to traverse many network devices and links that add up to the overall delay
3) Variable delay – sometimes there is a lot of other traffic which results in more delay
4) Drops – packets have to be dropped when a link is congested