What type of communication does a half-duplex connection allow?

A half-duplex connection allows communication in both directions, but not at the same time. This means that while one device is sending data, the other device must wait until the transmission is complete before it can send its own data. This is similar to a walkie-talkie, where one person speaks while the other listens, and they must take turns to communicate.

In situations where half-duplex communication is implemented, there is a need for coordination to avoid collisions of data transmission. This type of communication is efficient in scenarios where frequent back-and-forth communication is required, but not simultaneous sending and receiving.

Understanding this concept is important, as it distinguishes half-duplex from full-duplex systems, where communication can occur in both directions simultaneously, and simplex systems, which allow only one-way communication.