When the interviewer asks you about your strength, he is trying to gauge your confidence in your skills and abilities. You should be able to reveal through your words what your true strength is. This question should be carefully phrased. Interviewers are always eager to trap you with your answers. Frame your answer in such a fashion that they cannot counter question you. The interviewers are always looking for loopholes in your answers. Individuals who have experience working in the industry are aware of these tricks. They know how to tackle tricky questions. You must make sure you are confident and prepared for challenges.