Braindumps are an invaluable part of your studies and path to certification. Nobody likes anyone that passes exams JUST using braindumps. But I have noticed that you sit in a week long course, and you do the exam, you and see that week has not nearly prepared you for the exam.
Same goes for guys with years' experience in the field but no papers to show for it (perhaps appointed in the position years ago, internal shifts, etc etc), braindumps will get them used to the kind of questions to expect and the logic of the exam.