Keith -- you asked the questions that nobody else wanted to ask
and in fact you asked a lot of questions that I hadn't even though about, but they were all good questions!
So, I think we have a lot to appreciate in the relentless
questions you've been asking, and your determination to get answers in every place where the spec (and the book) were vague or misleading.
I think you're going to do just fine on the exam. I hope you stick around here after you've passed
cheers and good luck!!
-Kathy