I interviewed on campus for the technology advisor program(TAP). The on campus interview was behavioral, with questions focusing on some past skills/experiences from my resume and about teamwork, as well as strengths and weaknesses. I was notified 2.5 weeks later that I had been accepted to the second round "Megaday" at the NYC office, which consists of 2 interviews and a case study. Most of the time spent in the interviews were spent by me asking questions to the interviewer. Make sure you have plenty prepared and show a genuine interest in EY and the program. The interviews questions focused mostly on the skills that I could bring to the table, as well as more behavioral questions. The case study was challenging(theoretical based, not mathematical), but they definitely help guide you through it.