Of course the alternative would be a problem as well. If someone comes to me expecting a "90%" answer then they're going to get irritated if my first response i

Of course the alternative would be a problem as well. If someone comes to me expecting a "90%" answer then they're going to get irritated if my first response is to ask more and more questions. (Unfortunately this is something I often find myself doing!) In an interview though I'd tend to always avoid 90% answers, or to qualify them carefully. I expect interviews to have "trick" questions or to lead on to interesting discussions, so any question with an answer as simple as "use mysqldump" would raise a red flag in my mind.