When data is able to travel in both directions on a cable, it is known as which of the following?

When data is able to travel in both directions on a cable simultaneously, this mode of communication is referred to as full duplex. In a full duplex system, both devices can send and receive data at the same time, which enhances the efficiency and speed of communication. This allows for continuous and seamless interaction, similar to a two-way conversation where both parties can speak and listen simultaneously without interruption.

In contrast, half duplex allows data to flow in both directions, but not at the same time; communication alternates between sending and receiving. Simplex, on the other hand, supports one-way communication only, where data flows in a single direction, limiting interactivity. The term duplex simply refers to the capability of communication in either one or both directions but does not specify simultaneous transmission, making it less precise than full duplex. Full duplex is therefore the most accurate term to use when describing a system where two-way communication occurs concurrently.