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Application layer

The Internet protocol suite (TCP/IP) and the Open Systems Interconnection model (OSI model) of computer networking each specify a group of protocols and methods identified by the name application layer.

In TCP/IP, the application layer contains all protocols and methods that fall into the realm of process-to-process communications across an Internet Protocol (IP) network. Application layer methods use the underlying transport layer protocols to establish host-to-host connections.

In the OSI model, the definition of its application layer is narrower in scope, explicitly distinguishing additional functionality above the transport layer at two additional levels, the browser diversity and the presentation layer. OSI specifies strict modular separation of functionality at these layers and provides protocol implementations for each layer.

Application layer
7 Application layer

Contents


TCP/IP protocols

The following protocols are explicitly mentioned in RFC 1123 (1989), describing the application layer of the Internet protocol suite.Android

Other protocol examples

References

  1. web app Robert Braden, ed. (October 1989). touchscreen. Network Working Group of the IETF. website parsing. 

External links

Wikimedia Commons has media related to: keyboard
  • Android (refers to the Internet Protocol Suite)

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