In order to respond to a question which I don't know the answer of, I try using company procedures or whatever I was trained for, and I use that knowledge to answer the question, and if I don't, I ask somebody who has much better experience than me and have a good answer for the question. And even if they don't know that there's always Google, if there's no answer on Google, then I apologize for the question and I cannot answer that, so basically I apologize if I don't have any answer even after trying.