I took it at lunch while at work, on a whim, with no reference materials....and just barely squeeked by. I thought I was done, and then had a few unanswered questions *that I thought I had answered*...my intent was to fail to get an understanding of what they were asking, but I passed by the hair on my chinny chin chin (as they say).
The wording of such entrance exams are designed to throw you off....after all, it is beer nerds testing you to see if you are worthy of being in the club.
The real challenge is finding a testing slot within a 12 month window. I have one in March 2013 *I think, and I tested just after the opening of the new on-line exam in April 2012. There are at least 5 exams scheduled in my area in the next 12 months, and to my knowledge, I got the last slot. I even checked my old home town (fly to test) and the 3 or 4 scheduled in the next year were also booked.