The presentation layer gets its name from its purpose: It presents data to the Application layer and is responsible for data translation and code formatting.
This layer is essentially a translator and provides coding and conversation functions. A successful data transfer technique is to adopt the data into a standard format before transmission. Computers are configured to received this generally formatted data and then convert the data back into its native format for actual reading (for example, EBCDIC, to ASCII). By providing translation services, the Presentation layer ensures that data transferred from the Application layer of one system can be read by the Application layer of another one.
The OSI has protocol standards that define how standard data should be formatted. tasks like data compression, decompression, encryption, and decryption are associated with this layer.
Presentation Protocols Supported by the Presentation Layer :
- Joint Photographic Experts Group (JPEG)
- American Standard Code for Information Interchange (ASCII)
- Extended Binary Coded Decimal Interchange Code (EBCDIC)
- Tagged Image File Format (TIFF)
- Graphic Image File (GIF)
- Picture (PICT)
- Moving Picture Experts Group (MPEG)
- Musical Instrument Digital Interface (MIDI)
- QuickTime
- Rich Text Format (RTF)
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