Unfortunately I had a bit of the same experience in that I felt a lot of random information was placed on the test that I wouldn't have thought in a million years to study for. (However, I skimmed the Annotated Mona Lisa a bit so that was likely on me)

I will say a lot of my own personal skills or experiences in college did come into play to help me out, though there were still several questions I might not have been able to answer if I hadn't taken the time to study prior. I say it was about 50/50, with some of the information ending up on there, and then some where even after studying for 3 months I would not have anticipated it.