No, you read it right. I just assumed my meaning would be clearer than it apparently was. To me, the word “TCP model” doesn’t strictly mean anything. There’s the TCP protocol, and the TCP/IP model. I assumed my usage of the word “model” would make it clear that I meant the latter, but I guess I can see how people would interpret it as the former.
though I’m still confused what about OSI is “theoretical and has never been used
A real-world implementation of OSI would involve separate protocols for each layer. There have been numerous different ways of describing TCP/IP in terms of OSI layers, but roughly speaking, the broadest possible interpretation is that TCP/IP’s “application layer” covers OSI layers 5, 6, and 7, with TCP covering layer 4, and IP layer 3. But some analyses also suggest TCP/UDP ports are a layer 5 concern. Ultimately, the TCP/IP networking model is a separate way of looking at things to the OSI model, and it would be silly to suggest that it’s the same.
Yes, you are completely right. That’s likely also the reason for your confusion regarding OSI, since you appear to compare it to TCP/IP in a rather literal manner.
Obviously TCP/IP is better at describing TCP/IP than OSI, though while OSI also can be used to describe TCP/IP in a sub-optimal manner, TCP/IP cannot be used to describe OSI.
No, you read it right. I just assumed my meaning would be clearer than it apparently was. To me, the word “TCP model” doesn’t strictly mean anything. There’s the TCP protocol, and the TCP/IP model. I assumed my usage of the word “model” would make it clear that I meant the latter, but I guess I can see how people would interpret it as the former.
A real-world implementation of OSI would involve separate protocols for each layer. There have been numerous different ways of describing TCP/IP in terms of OSI layers, but roughly speaking, the broadest possible interpretation is that TCP/IP’s “application layer” covers OSI layers 5, 6, and 7, with TCP covering layer 4, and IP layer 3. But some analyses also suggest TCP/UDP ports are a layer 5 concern. Ultimately, the TCP/IP networking model is a separate way of looking at things to the OSI model, and it would be silly to suggest that it’s the same.
Just saw this comment.
Yes, you are completely right. That’s likely also the reason for your confusion regarding OSI, since you appear to compare it to TCP/IP in a rather literal manner.
Obviously TCP/IP is better at describing TCP/IP than OSI, though while OSI also can be used to describe TCP/IP in a sub-optimal manner, TCP/IP cannot be used to describe OSI.