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Chapter 2. Network Media > Simplex, Half-Duplex, and Full Duplex

Simplex, Half-Duplex, and Full Duplex

When data travels across the medium, it travels in a certain direction. To describe the movement of data across communication channels, certain terms are used, including:

  • Simplex, which refers to data moving in a single direction.

  • Half-duplex, which means data travels both ways on the medium, but in only one direction at a time.

  • Full duplex, which means data travels in both directions simultaneously.


  

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