How do one answer strength and weakness in interview?

Answer 1

You may be asked during a job interview to define your strengths and weaknesses. When discussing your weaknesses, be honest, but also discuss what steps you are taking to improve your weaknesses.

Answer 2

The aim here must be to identify one strength you have that is really important to the job for which you are being interviewed.

For the weakness you need to turn that into a strength (as an employer might see it). So for example you could say you are a bit of a perfectionist and that means you can sometimes get frustrated with people who don't do a job to the standard you would do it

The link below takes you to a free article on how to prepare successfully for interviews.