I’ve read and seen videos on the OSI model and from what I remember it’s just a reference model for how you should develop a network in a computer but it’s not strict in that you should follow it exactly how it looks?
I could be misremembering but if I’m not then my question is why do we use it in the first place? Is it just a checklist of sorts to make sure we’re including the main parts?
Also as a follow up question, in networking I always see ports as in port (long number) I am always confused are these actual physical ports?
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