The correct answer is: video conferencing
Explanation: Video conferencing is a real-time audio and video process that uses audio and video communications to connect people. Due to the time-sensitive nature of these two forms of communication, as well as the bandwidth requirements for each, both of these require quality of service on the network. QoS guarantees that users have the same network experience regardless of what is happening on the network.
Answers Explanation & Hints:
An audio and video conference can be conducted in real-time. It is a time-sensitive and bandwidth-intensive form of communication and therefore that is why it is important to make sure the network provides quality of service to enable it to function properly. through the implementation of quality of service, users are guaranteed uninterrupted service.