I applied through an employee referral. I interviewed at Boston University in Jan 2019
Interview
It is usually based on the professor, but if you show interest in their research or helping in their department it, it should be fine. I was just shown his project outlook and where I saw myself and explained to him my abilities and time schedule.
Interview questions [1]
Question 1
The interviewer asked me questions about my grades and ability to handle a new project. There was a strong focus on gauging my passion to ward the project and the field of study.