What is an online exam and how do they happen?

What is an online exam, how do they happen?

This question has been covered before. I suggest you read the following threads, as from those you will get a general idea -

https://en.zity.biz/index.php?mx=forum;ox=display;topic=6463

https://en.zity.biz/index.php?mx=forum;ox=display;topic=7076

https://en.zity.biz/index.php?mx=forum;ox=display;topic=114737

Happy to discuss