Certified Technology Specialist (CTS) Practice Exam 2026 – The All-in-One Guide to Exam Success!

The standard commonly used for video conferencing is H.323. This protocol is designed specifically for multimedia communications over packet-based networks such as the internet. H.323 supports various forms of communication, including video, audio, and data conferencing, making it a versatile choice for video conferencing systems. It encompasses standards for endpoint devices, call signaling, and media transport, which are all essential for establishing and maintaining effective video communication sessions.

In contrast, the other options serve different purposes. V.90 refers to a modem standard for data transmission over telephone lines, not directly related to video conferencing. 802.11ac is a wireless networking standard that specifies improvements for Wi-Fi networks, and while it supports data transmission that may improve video conferencing quality, it is not a protocol specifically designed for video conferencing itself. HDMI is a standard for transmitting high-definition audio and video signals between devices, and it's primarily used for connecting media devices to displays rather than facilitating communication over a network. Thus, H.323 is the appropriate choice as it is specifically tailored for video conferencing applications.