One of the best break downs of the OSI model that I have seen today.
OSI model: layers and corresponding protocols
Understanding this model is essential for anyone who wants to be involved in the field of computer networking. If you have forgotten the OSI model or just want to get a crash course in it, this cheat sheet by Ccna-security.net should help
TCP/IP Definition from PC Magazine Encyclopedia » pcmag.com
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Comparison Between OSI and TCP/IP Model
OSI model Definition from PC Magazine Encyclopedia
ISO Model and Protocols that go with them.
osi model - Google Search
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