The question is not entirely about programming, but still:
Question 1: if there is a computer that is connected to the Internet via cable, and at the same time it has a Wi-Fi adapter, is it possible to use it to make your own Wi-Fi network?
Question 2: Someone from the neighbors had a non-password Wi-Fi network. For some time through it, I sat on the Internet, but after a couple of days Internet access was lost. I would still understand if the thing was that the owners had set the password, but I can still connect to the point. However, when I go to the Internet, the browser writes that there is no connection. What can be wrong?