What happens if my internet connection goes out?

It is your responsibility to provide a stable internet connection.   If your internet is not stable at your home then find an alternate location and an alternate internet connection that is stable.  If you are taking the exam and your screen goes into a “black” or “frozen state” your internet connection, in all probability, is not stable.  Reconnect if you are able.  In an emergency see if you can tether your computer internet connection to your phone’s hot spot.