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OSI and TCP/IP Models

The OSI and TCP/IP model is used to help the developer to design their system for interoperability. The OSI model has 7 layers while the TCP/IP model has a more summarized form of the OSI model only consisting 4 layers. This is important if you're are trying to design a system to communicate with other systems.

Free Content Cloudflare - What is the OSI model Geeksforgeeks - Layers of OSI model Geeksforgeeks - TCP/IP model TCP/IP and the OSI Model Explained!