At which of the following layers of the OSI model does compression occur?
A.
Session B.
Transport C.
Data link D.
Presentation.
D.
At which of the following layers of the OSI model does compression occur?
A.
Session
B.
Transport
C.
Data link
D.
Presentation.
D.
Compression occurs at the Presentation layer of the OSI (Open Systems Interconnection) model. The Presentation layer is the sixth layer of the OSI model and is responsible for data formatting, encryption, and decryption.
Compression is a technique that reduces the size of data to be transmitted, which results in faster data transfer and reduces the amount of network bandwidth required for transmission. Compression can be applied to various types of data, including text, images, audio, and video.
At the Presentation layer, data is prepared for transmission by being compressed or decompressed. The compressed data is then formatted into a format that can be understood by the recipient system. The Presentation layer is also responsible for ensuring that the data is properly encrypted and decrypted for secure transmission over the network.
Therefore, the correct answer is D. Presentation.