Vijay
A product developer at Anand Software and involved in Learning and Assessment System development. Check it out at Learning and Assessment System
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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