For fresh graduates, typically you need to submit your portfolio and sit for two screening exams before getting called to the interview. However, you can also skip straight to the interview if the recruiters have seen your portfolio before hand and like what they see. For industry experts, you will be screened before the interview via the portfolio you have submitted. For fresh graduates, interview questions can be very general and is used to gauge your interests and possibly which project you should be put on. For industry professionals, the interviewer is likely from a running project looking for personnel, and the questions will be more specific to their needs/ who they are looking for.