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Presentation Layer

The sixth layer of the OSI model, responsible for data translation, encryption, and compression.

Categorynetwork

Overview

The Presentation Layer (Layer 6) acts as a translator for the network. It ensures that data sent from the application layer of one system can be read by the application layer of another.

Key Functions

  • Data Translation: Converting between different formats (e.g., ASCII to EBCDIC).
  • Encryption/Decryption: Securing data for transmission and restoring it at the destination.
  • Compression: Reducing the size of data to improve transmission efficiency.

Examples

  • SSL/TLS (often considered to span layers 4-6).
  • JPEG, MPEG, GIF (data formats).
  • XML, JSON (data representation).

Related Terms

OSI ModelApplication Layer