I'm forced to take the test in full screen mode. How can I escape from this?

Some tests have the full screen mode enabled for them in which you'll be automatically taken to a full screen as you attempt the test. You can't take these tests without the full screen. However, if you wish to navigate to another window/browser tab during the test, you can do so by pressing "Esc" or Alt+Tab. The recruiter will be aware of how many times this was done and for how long you were out of the full screen.