What is OSI Model | 7 Layers Explained | Imperva
https://www.imperva.com/learn/application-security/osi-model/
webFeb 19, 2024 · OSI is a generic, protocol-independent model intended to describe all forms of network communication. In TCP/IP, most applications use all the layers, while in OSI simple applications do not use all seven layers. Only layers 1, 2 and 3 are mandatory to enable any data communication.
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