I haven't had any management training, but my preferred ways to ask questions (especially in a paired coding session) is to frame everything in a way that makes it comfortable for them to say they don't know something, or don't know how to do something.
We tend to feel more off about a candidate if they look like they are pretending they know something, which really sucks when they totally know it, but are getting into their own head.
My favorite interview experiences always are the ones where they say they are stuck/or they don't know, and a little nudge helps them find their way.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.