I've interviewed ~50 people by now - being honest and admitting ignorance earns you minor plus points. Weaseling, dodging the questions or answering the question you wish you were asked instead of the question you were asked - those are major red flags. Remember - you're likely going to be interviewed by somebody more senior than you - the likelihood they'll find out is quite high.

Your task as an interviewee is to provide an honest and accurate assessment of your skillset and competence level.