Multiple choice technology architecture

What is the name of layer 1 of the OSI reference model ?

  1. The physical layer

  2. The transport layer

  3. The data link layer

  4. The network layer
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Explanation

Layer 1 of the OSI model is the Physical layer, which defines the electrical, mechanical, and procedural specifications for transmitting raw bits over a physical medium (cables, wireless signals). It deals with physical connectors, voltage levels, and modulation techniques.

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