Success in your professional career depends a lot on how are you preparing for the forthcoming interviews. It may be your first appearance in an interview, but you can’t assume that your nervousness, or novice approach will be taken for granted to the interview board. There is no scope for making any silly mistakes. Interview board doesn’t want to see how knowledgeable you are, they are more interested to see how are going to handle all the real-world situations single-handedly, and in a group.