Additional mock exams for practice

I'm on my way to get my second certification and just failed the exam (by one question!).

I really miss some sort of mock q/a to evaluate myself before applying for the exam to see which parts I must dig in deeper or review, since you don't see this until you answer some questions.

I know there's a practice exam provided by dell with the same 60 questions rotating in a random way, but I'd like to know if there's that option anyway, just to know when one is ready to pay the exam fee and get evaluated: Even though I can get a sense of which areas I must review before retaking the exam, since the report sheet tells you the percents of failure in each area: Wouldn't want to try again without making sure I'm ready. A way to self-evaluate would be very helpful.