Dear Khushboo Sharma,
What is the context of your query? Are you a student or a professional? You have raised two posts for your questions. These questions are generally asked in the interview.
There is no uniform answer to this question. The members of this forum have faced challenges in their individual capacity, and each one has a unique experience. If members share their challenges, it could be a learning experience, however, someone else's experience cannot be shared in the interview. If the interviewer digs for further details, then you may not be able to give an explanation.
The question that you have asked is a primary question in the interview. The supplementary questions to this question are:
a) What exactly was the challenge?
b) Why did the challenge come up at all? What proactiveness you had shown to prevent it?
c) Did you take support from the top management? If yes, who was the person and what was the support?
d) Did you show savoir-faire (tactfulness ) while handling the challenge? If yes, then how?
The question that you have raised is suitable for the managerial level. In fact, it is not suitable at that level also as to handle the challenges one has to be empowered sufficiently. Sans the authority and expectation of the unquestionable obedience (by the juniors) by the top management, such questions themselves pose a big challenge.
Thanks,
Dinesh Divekar