Biosense Webster Software Engineer interview questions

This was the first phone interview. The interview lasted half an hour. The interviewer was very kind. Told what the company is developing. At the end of the interview she said I had moved on to the next stage.

Mainly a standard SW Engineering interview. Wanted to see problem solving skills and way of approaching problems. Asked some basic programming question including C++ language mechanisms questions In C++: why are Virtual Destructors required? How the Virtual Function Tables work?