real exam vs mock test (quality of questions, difficulty)
As many here have already taken the exams or in the process of preparing for exams, from various sources (online, books, training material etc) of mock tests, I was wondering is someone has information on the mock tests, if they are similar & realistic to the real exam (in terms of level of difficulty and time available). I found many of the free exams online with lots of mistakes (contradicting what PMBOK suggests), gramatical and spelling mistakes in the questions (mildly anoying though), 5 choices of answers to select from (would prefer four as it may help with better time management strategy in the real exam) and some of them have questions pertaining to PMBOK4 (process names etc).
Until now I came across PMStudy, PM exam simulator, Exam central, BrainBOK and these practice tests seem which are fairly good (in terms of quality of questions), but I am still trying to figure out how these tests (easier, similar, harder) can be compared to the real exam. I am planning to purchase the mock tests soon. Appreciate your responses and suggestions.
Thanks in advance.