The physical layer concerns with____________________?
Correct answer: A. bit-by-bit delivery
- A. bit-by-bit delivery
- B. process to process delivery
- C. application to application delivery
- D. none of these
Explanation
The physical layer transmits raw bits over a medium, so its delivery is described as bit-by-bit. Process-to-process and application-to-application delivery belong to higher protocol layers.
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