I'll let others comment regarding the test format itself, however here are my thoughts on preparing for it, as well as a couple of other helpful Q&As.
In essence, don't try to game personality/culture match tests.
1) Those tests are designed to measure fit. If you're cheating the game you're actually cheating yourself (hard to see when you're in it, but trust me, you don't want to go somewhere you don't belong)
2) You can't predict/outsmart these things. Given that, would you rather fail knowing you answered completely honestly and true to yourself OR, fail knowing you were ungenuine and just said what you thought they wanted? Imagine not getting in, based on answers that weren't you, and always wondering if you'd be in if you were just yourself!