Computers used in Computer-Based Examinations?

Solution 1:

Kiosk mode can limit a user's interaction within an application or OS. Kiosk mode or kiosk software is used to lock down the GUI for security and to prevent unauthorized functions. Kiosk mode can also be used to limit the user's interaction to being able to run only one application as a guest user on a computer.

Ubuntu is often used as the operating system for kiosks because it is a popular, free OS that is easy to install. For more information about how an Ubuntu kiosk works see How to make Ubuntu 14.04 a kiosk. The accepted answer to this question was written by the blogger who also wrote Building a kiosk computer with Ubuntu 14.04 and Chrome and Converting an existing Ubuntu Desktop into a Chrome kiosk.