Late to this thread, but I'll reiterate the same thing I said on the old thread about interviews... My biggest pet peeve, when interviewing someone, is when they more or less lie, or expect me to believe they understand something that they don't.
I'd much prefer they answer that they don't know, but understand who to ask, or how to find the answers they need. I tend to ask VERY specific questions, that I certainly already have answers to, so I know when someone tries to BS.
Also late to this thread, but then again first post.
I completely agree with this whole post in regards to BSing your way through an interview. We hired on a guy that nailed the interview, and we let him go less than a month later. Turns out he was amazing at BSing people but had no clue what he was doing otherwise.