Multiple choice

Which of the following is true about physical layer of the OSI model?

  1. Controls error detection and correction

  2. Constructs packet of data and sends them across the network

  3. Defines the electrical characterstics of the signals passed between the computer and communication devices

  4. Responsible for dialogue control and token management

  5. Encryption and decryption

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

This option is correct.