Multiple choice

Which layer is the layer closest to the transmission medium?

  1. Physical Layer

  2. Data Link Layer

  3. Network Layer

  4. Transport Layer
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A Correct answer
Explanation

This layer is responsible for movement of individual of bits from one node to the next.Physical layer deals with the mechanical and electrical specifications of the interface and transmission medium.The following are the functions of the 

physical layer:Representation of bits,line configuration,physical topology,physical characteristics of interfaces and medium.this is closest to the transmission medium,so this is the correct answer.

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