Never give the worst answer.

[nithin]

Do you know what the worst answer given by the interviewee in an interview is? “…. I don’t know” The interview is about taking the opportunity to show what you know. Especially in a phone interview, the interviewer can’t see you in person so the only way for the interviewer to evaluate you is your CV and your answers to his/her questions. If you simply end up by saying “…I don’t know”, you are just giving up the opportunity