What information is transmitted when connected to a network?

Question

Computer networks

Good day.
There is a network. To access the Internet, you must, when connected to wi-fi, log in using a unique username and password for each user.
What data is transmitted to network admins when connected to this network?
If the entire site is covered by several routers operating as one (on the same network), is it possible to calculate which router I am closest to (which one I am connected to)?
Are data transmitted about the machine that connected to this network?

Answer 1

1. During authorization, nothing is transmitted except for the login and password (based on your description).
2. You can calculate the nearest access point, there are many wi-fi network scanners, for example, the first one from the search engine is acrylicwifi. Under mobile platforms, scanners showing information about visible access points are countless.
3. To work in tcp / ip networks, only the poppy address is needed from the machine, and it is transmitted. But there are various programs that allow you to get additional information by scanning your computer. And the amount of this information depends on the settings of the operating system.