I don't want to degrade the company or anything, but I have used the MS exam ref for the 410, and I am about half way through cbtnuggets videos. I wanted to get some practice questions to make sure I knew everything.. and oh my. I am just doing the first objective and there are some questions that I literally have never heard about or have no idea what it is talking about, I will pretty soon try to find it back in my notes in book, but it seems so far out that I can't even think of something to reference it with.  Anyone else have this or do I just have to hit the books a lot harder?