mock test at home pc is a  progressive elaboration of rolling wave planning type and at exam centre it is  a prototype planning type.

better one is prototype.

Hi Saikh – This is important to note that PMI certifies ONLY for REP’s i.e. Registered Educational Provider. By REP it means that PMI would trust the PDU awarded by such institute. Keep in mind I just said PDU i.e. the PM hours workshop/training that you require for PMP (35 Hours) and similar PDU you require for maintaining PMP credentials (60 hours).

There is NO authority including PMI that certifies or Trust any PMP book writer or mock Test providers. Anyone can publish PMP book and so for Mock Test. The trust factor that expert talks here are democratic in nature i.e. as per people’s feedback and author profile.

So keep in mind, if you see REP banner in any website, the REP is just applicable for PMP workshop/training it provides and NOT for the book it publishes and the Mock Test it provides. In short, there is no PMI trusted/certified Mock Exam available from anywhere.

About quality of various Mock Test Providers – See what various people tell, try the free one available and trust as per your discretion. There is no global definition for good and bad, the one that suits you would be best for you….that simple.