Since PMP is an online exam, understanding the PMP online environment will help you plan your strategy for scoring well in the PMP exam.
PMP Exam has a countdown timer, and includes buttons to move to Next Question, Previous Question and View all Answers. The PMP exam also allows you to Mark Questions for Review, and has "Dummy Questions" which are not used for scoring.
PMstudy.com exam provides all the features similar to the PMP Exam format - so, just 15 minutes of PMstudy test will help you understand all about the PMP exam format.
You will also understand why PMstudy is considered by several thousand successful PMPs, as "THE BEST" solution for PMP Exam aspirants as it evaluates your answers to identify your strong and weak areas, and provides the breakup of time for different questions.