Multiple choice

Which of the following is/are NOT the characteristic(s) of a physical layer?

  1. Functional

  2. Mechanical

  3. Electrical

  4. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the above are the characterstics of a physical layer, i.e. electrical, functional and mechanical. So, 'none of these' is the correct answer.