I understand roughly the OSI model, and I also understand the TCP/IP model. What I am struggling to grasp is the actual process and how many times it might happen during the ONE request. If I open up a browser and goto a website, then using the theory of the OSI model, EVERY place I read up on this implies that everything happens in one go, going from layer 7 to layer 1, before reaching the destination, where it will go from 1 to 7. Surely, an ARP request will happen, or a DNS lookup and many many other things will happen. Surely each of these process use this model seperately. So, if I enter a web site name, it cannot be a simple case of going through this theoretrical model once, from 7 to 1 and then when reaches its destination 7 to 1. It must do this many times. Every website I goto implies it is done just ONCE??
When trying to learn something, I cannot just accept things. I have to understand why and how. Mayber wireshark would list all the processes?
Also, if the physical layer is responsible for sending the bits of data (1s and 0s), but I am using my wireless laptop, does this mean that data is transferred from my laptop using RF and NOT digital bits??
No idea whether this question(s) makes sense?
Thanks
Nick
