Anyone who has had the experience of going to a board of inquiry, or an accident investigation, or any kind of military tribunal can tell you the simplest quetions can be the most incriminatng.

What color was the signal?
How far were you standing from the (whatever)?
How far are you supposed to stand?

If you cant answer a simple question about your job (or a job you’d like to have) or something that demonstrates you abilities to handle that job, maybe you in the wrong job to begin with.