Navy IT Communications Part 5 Practice Test

A delta circuit is?

Full-duplex with 2 frequencies Simplex Duplex Half-duplex with 1 frequency

Correct Answer:

Simplex

Explanation:

One-way transmission is the focus here. A delta circuit is simplex, meaning data can travel in only one direction—from transmitter to receiver—without a return path. It doesn’t support simultaneous two-way communication or even a back-and-forth on the same channel. Full-duplex would require two channels (or frequencies) for two-way talk at the same time, while half-duplex uses a single channel but still alternates direction. Since a delta circuit provides just a single-path, one-way link, simplex is the best fit. Think of a broadcast feed from a base to field units where receivers listen but don’t respond on that link.

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