Generally, the PMP exam is considered difficult, and I agree with it. It is more difficult than any other (PMP) mock exam (free or otherwise) you would have attempted before. The questions on the real exam are phrased differently than on the mock exams. Questions are also lengthier (more wordy) than those on sample exams. The wording is very tricky, and there are a lot of 'situational' questions - situational, situational, situational. Even some of the formula related questions are situational. I hardly remember any question on the real exam that I had seen before the exam, even though I had attempted more than 3500 sample questions.
However, if you have Project Management experience, prepared well for the exam, and attempted plenty of sample questions from "good sources", you should be able to crack the real exam. It's difficult but not impossible. After all, there are more than 300K PMPs out there and not all of them are geniuses.
Tip: Start with some good free mock exams and save the commercial ones for the last. For the commercial exams, I recommend PM Exam Simulator (1800 Questions). An 80% score in your first attempt on these exams is a good indicator of your readiness for the real exam.
PMP Certification FAQs
100+ FAQs about PMP Certification
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