What is a characteristic of video traffic that governs QoS requirements for video?
A . Video is typically constant bit rate.
B . Voice and video are the same, so they have the same QoS requirements.
C . Voice and video traffic are different, but they have the same QoS requirements.
D . Video is typically variable bit rate.
Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab11/collab11/cac.html