What device can link multiple videoconferencing sites into a single videoconference, also known as a bridge between sites?

• A. Bridge
• B. Multi-point Control Unit
• C. MPEG
• D. Megapixel

Answer: (B)

A device that links several videoconferencing sites into one meeting is the Multi-point Control Unit. The MCU acts as the central hub for a multipoint conference: it receives video and audio streams from each site, handles switching or mixing the feeds, applies a chosen layout, and distributes the combined conference back to all participants. It also often manages control aspects like who is speaking and how content is shared, making the whole multi-site call feel like a single cohesive meeting.

MPEG is a video encoding standard, not a conferencing bridge. Megapixel refers to image resolution, not conferencing hardware. While the term bridge can describe linking sites, the precise device used to manage and control a multipoint conference is the Multi-point Control Unit.