How Does the Presentation Layer of the OSI Model Work?

The Presentation Layer is the sixth layer in the 7 layer Open System Interconnection (OSI) model and essentially deals with data representation and encryption.

The Presentation Layer works by establishing and context between itself and the Application Layer entities. This allows higher layer entities to use different semantics and syntax so long as the presentation service understands both and the mapping between them.

The Presentation Layer provides independence from any differences in data representation by translating from application to network format and vice versa, an example of this is encryption. This layer works to transform data into the form the application layer can accept. The Presentation Layer formats and encrypts data that is to be sent across a network; this provides freedom from compatibility problems.