An interviewer can ask your any types of question to ascertain your quality and character. Answering all questions is grate, however all the answers should be correct and informative. If you answered all the questions of interviewer and all were bluff then you simply wasted your times as well as your interviewer times.Always try to avoid bluff while facing interview. Apologizing for not knowing answer is far better than throwing bluff. At least at the end of the interview you would be treated as an honest boy.
If you couldn’t able to listen the interviewer question precisely then request him to repeat that by addressing --- I beg your pardon sir or pardon sir. Try to always answer all the questions in polite manner and your answer should be informative and should be neat and clear. Try to explain the exact things without ramble, because it’s quite irritating.