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

Yup. Quic, for example, layers on UDP instead of TCP. It’s still an IP based protocol. But then you can also get things like FCoE which don’t even use TCP/UDP. Or even ATM which uses its own frame structure. There’s plenty of reasons to need to understand the OSI model.

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