| TCP/IP | OSI |
| 1. It stands for Transmission Control Protocol/ Internet Protocol | 1. It stands for Open system Interconnect
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| 2. It has 4 layers | 2. It has 7 layers |
| 3. It was developed by Department of Defense | 3. It was developed by International Standard Organization |
| 4. It follows horizontal approach | 4. It follows vertical approach |
| 5. TCP/IP model is both connection-oriented and connectionless. | 5. OSI model is only connection-oriented |
| 6. TCP/IP does not have a separate Presentation layer or Session layer | 6. OSI model has a separate Presentation layer and Session layer |
| 7. In TCP/IP model, the transport layer does not guarantees delivery of packets. | 7. In OSI model, the transport layer guarantees the delivery of packets. |