You'll find the quiz at http://www.ddj.com/linux-open-source/201801549
(assuming you use a browser that withstands all the "neat stuff" that
Quizzes like this always seem to irritate me. It sometimes seems as if
they go out of their way to be ambiguous and/or imprecise. So I decided
to vent, with your cooperation. Note that if I didn't find something to
complain about, I made something up. If you are the author of this quiz,
please try not to take it too personally.
My answers and comments to questions 1-25: