Which layer is responsible for the transmission of raw bits over a physical medium in the OSI model?
Correct answer: D. Physical layer
- A. Application layer
- B. Presentation layer
- C. Network layer
- D. Physical layer
Explanation
The Physical layer handles the electrical, optical, or electromagnetic signals that represent bits (0s and 1s). It defines aspects like voltages, cabling, connectors, and how the signals are sent and received.
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