The physical layer is concerned with ___________

Subject: Computer Networks

Topic: OSI Layer Model

Options:

1. Option A: bit-by-bit delivery
2. Option B: process to process delivery
3. Option C: application to application delivery
4. Option D: port to port delivery

Correct Answer:

Option A: bit-by-bit delivery

Explanation:

Physical layer deals with bit to bit delivery in networking. The data unit in the physical layer is bits. Process to process delivery or the port to port delivery is dealt in the transport layer. The various transmission mediums aid the physical layer in performing its functions.