Some of the questions were not related to my experience and job description. It seems the interviewer didn't even read my resume but asked questions based on his own background. I had to refresh him of my background. He then went to get a sets of questions probably from provided scripts and asked more relevant questions. I think that was not professional and gave candidate bad impression about the company. I think they should be better prepared. It is more like talking to robots where they just follow a routine. Some of them asked the same questions. That didn't make the process and use of time efficiently. Even if I didn't get the offer, I am not sorry. I don't think I like to work in this kind of environment. It is a good learning to be onsite and see how their work environment is. That is also a decision point if you want to work for them.