Biogen Co-Op interview questions

I took the interview last year in Cambridge MA. The whole hiring process was professional with smooth and fast period. A coordinator from maybe hr department handled all the things during the process and the reply for questions was quiet fast. I applied early the month on the official Biogen career site and took 3-4 days to get an email from hr for the schedule of phone interview. The interview took 30mins focusing on a combination of both technical questions and behavior question. After no more than a week got the onsite interview. One and half hours met with four managers and directors from the department I will work in and the questions are quite tough with a high pressure face to face talk.