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Difference Between Tcp Ip Model And Osi Model

TCP/IP model and OSI model both are conceptual models that characterizes and standardizes the internal functions of a communication system by partitioning it into abstraction layers. However , the TCP/IP model is fully designed model for internet and similar networks and hence also known as the INTERNET model.

OSI Model TCP/IP Model
OSI Model groups communication functions into seven abstraction layers. TCP/IP model groups communication functions into four abstraction layers .
The three top layers - the application layer, the presentation layer and the session layer are separated . In TCP/IP model these three layers are not distinguished separately where it is just the application layer.
Networks are not usually built around the OSI model as it is merely used as a guidance tool. TCP/IP is considered to be a more credible model- This is mainly due to the fact because TCP/IP protocols are the standards around which the internet was developed therefore it mainly gains creditability due to this reason.
The OSI model is a "generic, protocol- independent standard.“ In this model, Protocols do not fit well into the model. TCP and IP protocols fit well in the model.
OSI Layers TCP/IP Layers
  • Application
  • Presentation
  • Session
  • Application
  • Transport
  • Transport
  • Network
  • Internet
  • Data Link
  • Physical
  • Host-to-network /Network Access Layer

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