ISO's OSI Layered Model - Presentation Layer

This layer provides independence from differences in data representation (e.g., encryption) by translating from application to network format, and vice versa. The presentation layer works to transform data into the form that the application layer can accept. This layer formats and encrypts data to be sent across a network, providing freedom from compatibility problems. It is sometimes called the syntax layer.

Most file format belong to this layer, such as QuickTime, TIFF, JPEG, TDI, ASCII, EBCDIC, MIDI, MPEG, etc.

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