Be confident during the interview, maintain eye contact with the interviewer, and answer questions concisely and directly. Prepare well by knowing your resume in detail and practicing answering common interview questions so you can communicate clearly without getting nervous. If you do not know an answer, say so but emphasize your ability to learn quickly.

1.  Be Confident.
 Maintain eye contact.
 Answer to the point.
 Ensure that you know your resume very well and it is correctly made
as questions may be asked to you from your resume and it is your first
impression to the interviewer.
 When you do not know the answer, say that I do not know the answer
but I am a quick learner and I'll be able to pick up if I get the exposure
if you are certain about it.(Refrain from lying to the interviewer)
 Try to communicate with clarity, conciseness, and good sentence
formation, which you can by working on your communication skills.
 If no clarity on the question being asked, seek clarity on the same by
asking; I am sorry I did not follow you, could you please repeat or
rephrase (if you did not understand) your question?
 Ask about your job role as in what would your work be in a curious
state of mind.
 Know your short term and long-term goals.
 Do not try to be over smart by answering what's not asked; just
answer the question.
 Practice beforehand your answers to generally asked questions by the
interviewer.
Have Good Awareness about your:
 Experience/Education
 What you strive to do?
 Hobbies
 Interests
 Ask relevant questions if given opportunity.
 Do not speak too fast, speak at a medium pace.
 Do not be too nervous.
 Have a good grip and knowledge on the subjects, topics and concepts
that you could be asked by the interviewer by preparing well and in
detail to avoid any kind of wrong/no answers from your side.