The Presentation Layer provides
communication services by transparently converting the different data,
video, sound, and graphic formats to and from a format suitable for
transmission. This
layer is also responsible for data compression, decompression, encryption
and decryption.
Although, these can be specific
protocols, they are usually built into existing application layer
protocols.
Some of the Presentation Layer
standards involved include:
Text: ASCII, EBCDIC
Graphics: TIFF, JPEG, GIF, PICT
Sound: MIDI, MPEG, Quick Time
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