Tech Term Definitions

Currently, I am working on the lovely tech term definitions assignment for WRA and I have to say it is not fun.

I'm not quite sure as to how I am supposed to describe the importance of each term in a technical way, like in the example. This, I must say, bugs me because I do not know all that much about most of the terms (like .exe or .wav) and I don't want to just pull random BS out of my head and therefore look like an idiot.

Let's just hope that what I come up with is not idiotic and I, therefore, figure out the assignment.

Wish me luck.

P.S. My roommate's single and just wanted me to let you know.