which encryption and decryption of data takes place?

Which of the following is the layer in which encryption and decryption of data takes place?

A.
Presentation layer

B.
Session layer

C.
Physical layer

D.
Data-link layer

Explanation:
The presentation layer is the layer in which encryption and decryption of data takes place.

Answer B is incorrect. The session layer is responsible for data synchronization between the
applications on the sending device and the receiving device.

Answer C is incorrect. The physical layer is the lowest layer of the OSI model. The physical layer is
responsible for packaging and transmitting data over physical media. This layer controls the way in
which data is sent and received over a physical medium.