good question to ask, and the real answer comes down to where your interviewing.....my only interview thus far has been at eagle and all i was asked was to tell him a little about the airplane im currently flying (piper mojave) i think i threw the guy for a loophole because he acted like he didnt know what it was (not suprising) turns out in the end they just really dont ask that much about systems at some places, they just need to fill classes