I came across another PMP ITTO Quiz application. Though I couldn't figure out exactly how it works, I thought I should share the link and let you explore it on your own. Here's the link.
Obviously, I prefer and recommend brainBOK - PMP and CAPM ITTO Quiz over any other tool out there, I appreciate the innovativeness and originality of this other tool. Kudos to the developers.
If you want to learn more about brainBOK features, head over to brainBOK Wiki.