Interview background: In that session of interview, all the candidates are graduated from same university and course.
An Interviewer asked: "Do you know (person name)?"
My Answer --> "Yes"
An Interviewer asked further: "When compared to him, what's your strength over him?"
At this point, I wondered whether should I answer his question directly, since I don't know whether is it good or not to answer the comparison between candidates during an interview.
What is the interviewer trying to find out? Should I answer this question directly? If not, what should I do.