I got the book version of the AICPA Ethics Course but I would imagine the CD is the same concept: the 40 questions are the exact questions you will do online.
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I went through the questions and found the answers (I didn't read the entire book). Go online and enter your answers. If you make less than 90%, you have to retake the exam. They will not indicate which ones you got wrong and I guess it is the same questions. You get three attempts to make 90% and after that, you have to mail your scantron sheet to them.
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It's really not too bad. Took me about 6 hours but I was at work and being interrupted a lot.\n
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REG - 75 (expired, retake July 2011)
FAR - 69, 64, 67 <-Becker, 80 <-Yaeger
AUD - 82 ETHICS - 100
BEC - 72 (retake May 2011)