OSI Model vs TCPIP 

The Open Systems Interconnection (OSI) model and the Transmission Control Protocol/Internet Protocol (TCP/IP) model are both conceptual frameworks that describe how data is transmitted over a network. However, they differ in their structure and purpose.

OSI Model

The OSI model is a seven-layer model that was developed by the International Organization for Standardization (ISO) in the 1980s. It is a reference model, which means that it is not a specification for any particular implementation. The OSI model is intended to be a general framework for understanding and designing communication systems.


TCP/IP Model

The TCP/IP model is a four-layer model that was developed by the U.S. Department of Defense in the 1970s. It is a de facto standard, which means that it is widely used but not formally standardized. The TCP/IP model is more practical than the OSI model, and it is the basis for most modern Internet communication.


Layer OSI Model TCP/IP Model
(DoD Model)
Application Application, Presentation, Session Application
Transport Transport Transport
Network Network Internet
Data Link Data Link Network Access, Data Link
Physical Physical Physical

The following table provides the differences between the OSI model and TCP IP Models:

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By Vijay


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