The physical layer is responsible for
A)frequency selection,
B)modulation and data encryption.
C)both
D)modulation only

Question

Quizplus · Accepted Answer

The physical layer is responsible for both modulation and data encryption. Modulation is the process of converting digital data into a signal that can be transmitted over a physical medium, such as a wire or fiber optic cable. Data encryption is the process of converting data into a form that cannot be easily read or understood by unauthorized parties.

The Physical Layer Is Responsible for