CPEN Exam Help

Hello colleagues,
I am embarking on taking my CPEN next week and am seeking as much help as I can. The book I have came with a white 25 question post-test.. but no answers! Does anyone happen to have them? ALso, I registered and took the online 50 question exam, but selected "finish and grade", which only supplied a grade but no break-down of the correct answers (apparantly I should have selected the 'grade' option instead.. ridiculous). I owuld really appreciate any help. Or if anyone has recently taken the exam, offer some advice.
Thanks alot!!