How do you respond when you don't know the answer to a question? I usually respond when I don't know what a question is to let the person who's asked the question know that I don't know. Then I proceed to do some research to try to find the answer to the question either by asking superiors or other coworkers or using the internet or whatever resources I might have at my disposal to get the answer to the question and then let the person who asked the question know what that answer is.