What is the main difference between the OSI and TCP/IP models?

The OSI model is a reference model. It is mainly used for teaching and understanding how network communication works. It has 7 layers and helps people learn about each step of data transmission.

The TCP/IP model is a practical model that is actually used in real-world networking. It has 4 layers and is the foundation of how data is sent and received on the internet and other networks.

Key points:

• OSI is a guideline used for understanding networks


• TCP/IP is the working model used on real devices and systems


• TCP/IP combines some OSI layers for simpler design


• Most modern networks follow the TCP/IP model

Understanding both models helps in learning networking concepts and how real-world communication works.