![]() ![]() It receives information directly from users and displays incoming data to the user. The Application Layer in the OSI model is the layer that is the “closest to the end user”. The layers, and what they represent, are as follows: Layer 7 - Application Most descriptions of the OSI model go from top to bottom, with the numbers going from Layer 7 down to Layer 1. ![]() Conceived in the 1970s when computer networking was taking off, two separate models were merged in 1983 and published in 1984 to create the OSI model that most people are familiar with today. ![]() The layers are: Layer 1-Physical Layer 2-Data Link Layer 3-Network Layer 4-Transport Layer 5-Session Layer 6-Presentation Layer 7-Application. Tech vendors selling new products will often refer to the OSI model to help customers understand which layer their products work with or whether it works “across the stack”. The layers help network pros visualize what is going on within their networks and can help network managers narrow down problems (is it a physical issue or something with the application?), as well as computer programmers (when developing an application, which other layers does it need to work with?). The Open Systems Interconnect (OSI) model is a conceptual framework that describes networking or telecommunications systems as seven layers, each with its own function. ![]()
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