I took the entry exam on a provided desktop and on it was Windows and I understood as being that the Sentinel program works only in Windows and that it is needed for SoftUni to be able to monitor that exam takers will not be using chat programs or posting on forums to seek assistance when taking the exam.

As for the needs for programming then as far as I can see I have everything also available in Linux, so no problem there.

I remember that there were so many people on that date that they even moved some to other halls, so there definitely can't have been enough provided computers. So they just told all people that had an OS other than Windows (they weren't many by the way) not to get the program. Did they make you use another computer or did you decide that yourself?

First of all thanks for responding so quickly.

I booked a desktop as I had tried to start up the sentinel on my desktop computer at home (running on Ubuntu 16.04), which is much more powerful than my current laptop, and not even getting it to start and didn't want to take any risks.