Presentation Layer ln OSI Model | Presentation Layer Explained| Computer Network | Simplilearn
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This section introduces the topic of securing and safeguarding data over a network channel using the presentation layer in the OSI model.
What is an OSI Model?
- The OSI (Open System Interconnection) model is a set of protocols that govern communication channels for network devices. It divides the task of sharing information among seven layers.
- The presentation layer is responsible for converting data into a simplified form, encrypting and decrypting data, and compressing data transmission.
Functions of the Presentation Layer
- Data representation: The presentation layer handles data storage and processing, ensuring effective understanding and efficient use by the receiver. It also encrypts data for transmission.
- Data compression: Multiple compression techniques are applied to minimize data size for efficient transmission over the network.
- Network security: The presentation layer adds encryption at both sender and receiver ends, ensuring secure transmission. It provides various security protocols.
Protocols of the Presentation Layer
- Apple Filing Protocol (AFP): Handles basic network file control on Mac-based platforms.
- Lightweight Presentation Protocol (LPP): Provides PCP products with ISO presentation services.
- Network Data Representation (NDR): Implements the presentation layer in the OSI model.
- Secure Socket Layer (SSL): Encrypts data transmitted between web pages and data services.
This summary covers key points about securing and safeguarding data using the presentation layer in the OSI model.