The timing available to clear the 2V0-21.20 practice tests was exactly the same as the actual Professional VMware vSphere 7.x certification exam. This meant that the mocks are a replica of the actual exam. I started preparing and my timing was on track finally. However, i still lacked accuracy which was as important as the timing. But practicing on a daily basis for two months did yield good results and i was able to score high in the actual exam. I am very grateful to my friends who suggested to me that I opt for this method of preparing for the exam and dump the stale PDFs.