Today in 1983, 43 years ago: The ARPANET officially changes to using TCP/IP, the Internet Protocol, effectively creating the Internet.
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[–] 3 points 10 months ago (1 child)

It maps to L4 and L3

TCP/IP also doesn’t include the media layers L2 and L1 (like MAC and frames.)

Maybe think of OSI as the spec and TCP/IP as the implementation of some portions of that spec.

Like UDP would also be L4. So you would miss that too.

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