Bridge in videoconferencing is defined as?

• A. A device that links multiple videoconferencing sites into one session.
• B. A router that aggregates routes for a large network.
• C. A switch that operates at layer 2 only.
• D. A firewall for securing sessions.

Answer: (A)

In videoconferencing, a bridge is the device that links multiple videoconferencing sites into a single session, enabling participants at different locations to join the same conference and exchange audio, video, and data in real time. This function—connecting several endpoints into one maintained conference—is typically provided by a multipoint control unit or video bridge, which manages how streams are mixed or switched, coordinates layout, and handles bandwidth across sites. It isn’t a router that routes data across networks, nor a layer-2 switch that merely forwards frames locally, nor a firewall that enforces security policies; those devices have important networking roles but do not create and manage a multi-site videoconference.