Usually, you will have first phone interview with a current student/alumn who will ask based on your resume/profile. That will be mostly technical so make sure you review all the requirement (math/finance/programming). It's hard to know what you will be asked because it depends on the background of your interviewer.
Then you may get a second interview with the admission office which is more general, behavioral. You can search for previous posts on this.
Goodluck and let us know how it goes.