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Visual Networking Overview - The OSI Model - Application Layer
Exhibit 13-7 in the Gallery of Visual Networking
13. OSI Model Series
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Application Layer of the OSI Model
Illustration of the application layer of the OSI model with examples of common technologies found at that layer.

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This diagram illustrates the Application layer (Layer 7) of the OSI model. The Application layer supplies network services to end-user applications. Network services are typically protocols that work with user's data. For example, in a Web browser application, the Application layer protocol HTTP packages the data needed to send and receive Web page content as illustrated above. The Application layer provides data to (and obtains data from) the Presentation layer.

Related References - OSI Model Tutorial, HTTP
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