You work as a network consultant at YourDomain .com. One of your clients has a packet-switched Transmission Control Protocol/Internet Protocol (TCP/IP) network.
Now they want use two-way transmission of voice traffic.
What should you tell the client? Select two.

A.
Two-way voice transmission is not possible in this scenario.

B.
Quality of service (QoS) should be used.

C.
IP addressing should be used.

D.
Virtual local-area network (VLAN) should be used.

E.
Multicasting should be used.