The Foundations cert isn't about understanding ITIL in any depth... it's just an introduction to the terms and base concepts... which is why it's a cram-and-dump 40 question multiple choice that's pretty easy to pass if you approach it with even a small measure of engagement.

Don't get me started about ITIL exams generally though... they are on the whole far too easy, and a part of the certification cash-grab. That doesn't mean IT shouldn't be embracing IT Service Management though....