In networking, what does the term 'duplex transmission' refer to?

Duplex transmission refers to the ability to send and receive data simultaneously over a network connection. This capability is essential for efficient communication, allowing devices to transmit and receive information without waiting for the other party to finish its transmission. In a duplex system, both parties can communicate at the same time, which enhances the speed and efficiency of data exchange.

For instance, in a full-duplex system, such as a modern telephone conversation, both individuals can speak and listen simultaneously, leading to a more fluid and natural interaction. This contrasts with other forms of data transmission, which may limit communication to one direction at a time.

The other concepts do not capture the simultaneous nature of duplex transmission. For instance, single-direction data transfer refers to half-duplex communication, where data can only flow in one direction at a time, while data transfer using light signals pertains to optical communication, and sequential data flow implies a strictly ordered transfer rather than simultaneous communication. Thus, the definition centered on simultaneous sending and receiving accurately describes duplex transmission in networking.