This is a trick question for people who are giving them a bigger title. An interviewer will know what you really did by finding out what your manager does. For someone who didn't prepare for this question, he or she will fall into a trap. Let's say a person said he or she was a manager. If the interviewer asks this question and the person responds by saying similar types of responsibilities, then something is wrong. Why do you have the same responsibilities as your manager? To prepare for this question, make sure you answer that your manager did higher level work than your own. The work that you mention you did should be showing off your skills, but your manager should have even greater responsibilities. Then it really shows how high you are. The example I'm going to give represents me as a Group Program Manager.
The more details you provide the better your answer. It ensures you are telling the truth and that you are aware of what you need to be able to do to take the next step up. Finally, a great way to answer this question is to know what position you are applying for and then list off the responsibilities of the person you would be reporting to if you got hired. That will make the interviewer think that you have very similar or exact experience for the job you are applying for.
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