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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>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?
Essentially, this is correct. The OSI model is a way to characterize and standardize what each layer of the data flow should do, without specifying what it looks like or how it’s put together.
>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?
No; the term “port” here refers to a purely logical thing — that is, it’s not a physical thing you can touch. Port numbers are used by computers to identify specific applications, so that they only watch for traffic that’s meant for them.
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