You might expect to receive several

You might expect to receive several questions in the what-if
category. Usually what-ifs are hypothetical questions involving morality, ethics, and interpersonal relations. The interviewer is not looking for an exact answer as much as he or she is evaluating your judgment as good or poor. Consider the following hypothetical situations, and imagine how you might handle them, should the interviewer bring them up:

QUESTION: What if you noticed a team member really slacking off? He is coming in late, taking long lunches, leaving early, or chatting on the phone when he is supposed to be helping the team meet its deadline?
ANSWER: Well, I might say, “Hey, Harry, we really need your help here. This is an important project, and all of us need to work together to see it through. You’ve got the talents to help us make the deadline. I really rely on you as part of the team, and I think your involvement would help out everyone. I have a lot of respect for your ideas, and I think we really need your input.” If Harry didn’t show some change after our talk, I would probably have to bring it up with our supervisor.

QUESTION: What if your boss continually gossips about one of your coworkers with you and wants you to join in on the derogatory comments? Your reaction to situation number 2 would probably depend a lot upon your relationship with your boss. If you know the boss well, you might be able to say:
ANSWER: I really don’t feel comfortable talking about Sally in
this way.

Taken from : Fearless Interviewing - How To Win The Job