Completely disagree. While some of the questions had me look to the internet, most I was able to answer. I think that the more time you spend in the DOM, the more you run into these things and they become part of your knowledge set. Working on the same application day in, day out may not enforce this kind of knowledge, while having to create, work on and maintain a variety of applications will enforce knowledge retention. I'd argue that it's the difference between someone who works on a single product and a contractor who has to work on something new every hour/day/week.
Congratulations to you for having memorized many unnecessary-to-remember things then, I guess. I have a good memory for detail and have "spent a lot of time in the DOM" and most of the questions I skimmed I had no off-the-top-of-my-head answer for.
I could answer pretty much all of them in under a minute of Googling. Which tells me a) that I don't actually need to know the answers to them in real life, and therefore that the questions measure dumb ephemera; and b) that the questions are more a test of random chance ("oh yeah, I ran across that once" makes you more impressed by me?) than they are of developer skill.