Yes, it is based on the CS202 Course. When I think of an interview, I think of live interaction between the interviewer and the interviewee. I email questionnaires to graduates. This gets a higher return rate than telephone calls. I also do my best to verify & fact check the information they present so am I in category 1 or 2?

It's interesting to me that telephone interview is seen as being able to gather more results. It's been my experience that former graduates rarely answer or return telephone calls whereas they'll quickly respond to an email (which they can do on the mobile.)