Presentation Layer (Layer 6) tutorials

  • It performs data Presentation, Compression and Encryption so that it is recognizable by the receiver.

  • Layer 6 presents data to the Application layer and acts as a data format translator.

  • Format translation is necessary to ensure that the data can be read by applications.

  • Layer 6 also handles the structuring of data and negotiating data transfer syntax to Layer 7.

  • Processes involved include data encryption, decryption, compression, and decompression.

  • The Presentation layer is the only layer that can actually change data.

  • Layer 6 protocols include the following:

    • 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)