Hello, I read your requirements and would like to work on the project. I have a readymade solution for your project. We just need to do some customisations. After that you can use the online examination software.
If you want to see the demo, please let me know so that I can show you the insights of the software.
The software is best fit for your requirement.
The software is built in ASP.NET, MVC, C#, MS SQL, HTML5, CSS, Javascript, Bootstrap, etc.
For any details, please discuss in chat.
Thanks