Presentation Layer in OSI Model

As the name suggests, the presentation layer in OSI Model is for the syntax and semantics of the exchange between systems.

Presentation Layer in OSI Model

The following are the roles of presentation layer in OSI Model,


Change the Information like characters and numbersĀ  to stream of bits before transmission.

Encryption/ Decryption

When the sender transforms original information to another form, it is called Encryption. This information is sent on the network.

Under Decryption, the updated information is transformed to the actual message.


Reduce the number of bits with Compression. Useful in transmitting audio, video, etc over the network.

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Session Layer in OSI Model
Application Layer in OSI Model
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