Welcome to the forum. You might want to do some looking around at the various forums that TechExam provides. You might be surprised to see an Exchange forum. In fact, one of the very top posts is of someone who recently took 70-284 and stated he had 30 questions. There is also a Search feature near the top of the forums. Feel free to use it.
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Btw, here's that post:
http://www.techexams.net/forums/viewtopic.php?t=25959