Full-duplex refers to a communication system that allows for two-way transmission of data or signals simultaneously. In a full-duplex system, both parties can send and receive information at the same time, as opposed to half-duplex systems, where communication can only occur in one direction at a time (e.g., walkie-talkies). A common example of full-duplex communication is a telephone call, where both people can speak and listen to each other at the same time without needing to take turns. In networking, full-duplex communication enables devices to transmit and receive data simultaneously, improving the efficiency and speed of communication. [ChatGPT.com (2024)]