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Full-duplex is a communication mode that allows data to be sent and received simultaneously between two devices. This is different from half-duplex, which allows two-way communication but only one direction at a time, and simplex, which only allows one-way communication. Think of full-duplex like a telephone conversation where both people can speak and listen at the same time.

Simultaneous communication: Unlike half-duplex (like a walkie-talkie), full-duplex allows for true simultaneous data flow in both directions.

Higher performance: This mode is ideal for real-time, interactive communication and offers the highest performance because there are no wait times for the other device to finish sending data.

How it works: Full-duplex systems use separate communication channels or paths for sending and receiving to prevent collisions and data loss.

Examples: Common examples of full-duplex technology include telephone systems, modern switched Ethernet networks, and some wireless networks.