University of Rochester follows a quite relaxed approach towards the interviews that can range from 20-40 minutes. However some pointers to keep in mind for the interview would be :
(1)Dress in a business attire
(2)Call on time since it an online interview (be sure to check the time difference if you are calling from outside the U.S.)
(3)Rather than repeating essays or reading off your resume, be prepared to go into more detail by providing specific examples to their questions
(4)Also prepare 2-3 questions that you would like to ask the interviewer to learn more about the program
Some interview questions that you could prepare would be :
(1)Why Masters in Finance?
(2)Why Masters in Finance at Rochester?
(3)Assuming had unlimited funds, describe an experiment you would conduct?
(4)Why do you want to be a graduate student?
(5)Why would you be a good fit at Rochester?
Thus, be prepared to discuss your background and interest in graduate study and specifically your interest in attending the Simon Graduate School of Business
To get an overview of some common interview questions asked at top B-schools you can check out this link
https://www.mim-essay.com/duke-mms-interview-questions/Good luck