The OSI Model - Application Layer

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APPLICATION LAYER

Application

Presentation

Session

Transport

Network

Data Link

Physical

The OSI model defines the application layer as being the user interface. The OSI application layer is responsible for displaying data and images to the user in a human-recognizable format and to interface with the presentation layer below it.

Examples of applications that utilize the network are:

• Telnet
• FTP
• Instant Message software (AIM, MSN, ICQ, Yahoo)
• Microsoft Windows File Shares
• Web Browsers (Internet Explorer, Firefox, Google Chrome, Safari)
• Network games of Doom, Quake, Unreal (first-person 3D shooter video games)
• IRC (mIRC)

 

 

< The Presentation Layer | Index | The OSI Model in Operation >

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