What is Simplex communication?

• A. Data is transmitted in both directions
• B. One way, never both
• C. Data is transmitted in a continuous loop
• D. Simultaneous data exchange

Answer: (B)

Simplex communication refers to a type of data transmission where information flows in only one direction. In this mode, one device can send data, while the other device is only able to receive it, with no capability to send data back. This is particularly useful in systems where feedback is not necessary, such as in broadcasting environments, where signals are sent from a single source to many receivers.

The other options present different types of communication: bi-directional methods, like in option A, allow for two-way data exchange, and options C and D suggest methods where data is exchanged continuously or simultaneously, which are characteristics of full-duplex or specific multi-channel communication systems rather than simplex communication. These distinctions help clarify why simplex is defined solely by its one-way nature.