1.     Show interest and be engaging during the interview. 

2.     Never try to answer a question before interviewer finishes it. 

3.     If you don’t know the solution of a problem, try to say out loud on what you are thinking and how you are approaching it.  Don’t be total silent and just thinking about it. Interviewers often times don’t look for the correct answers, instead they want to know the train of thoughts of the candidate and how he/she solves a problem/answer a question.