this post was submitted on 22 Nov 2025
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Easy way to remember the OSI model (sh.itjust.works)
submitted 2 days ago by _thebrain_@sh.itjust.works to c/programmer_humor@programming.dev
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[–] credo@lemmy.world 5 points 1 day ago* (last edited 1 day ago) (1 children)

ISO is an organization. OSI is a model.

Edit: there are also definitely more than four “layers” (standard handoff points).

  • Physical involves the media and transmission format (e.g. EMF, waveform, etc)

  • data link involves multiplexing and addressing on the local segment

  • Network involves beyond-segment addressing

  • Transport involves standard endpoint communication methods (tcp/udp)

Are you implying this is where everything ends?

What about application level multiplexing (sockets)?

[–] a_non_monotonic_function@lemmy.world 1 points 17 hours ago

I'm not implying anything.