There's a difference between admitting you don't know a piece of trivia, and just giving up on questions. Engineering interviews that are quizzes on trivia are

There's a difference between admitting you don't know a piece of trivia, and just giving up on questions. Engineering interviews that are quizzes on trivia are really poor interviews. But if they ask a question I don't know the answer to, I'll talk my way through it as far as I can, but at some point you have to identify the missing pieces.