They have a set question format and will grade you according to how well you answer the questions. They will tally the total amount and get back to you after showing upper management your pros and cons. Your knowledge and best/worst case scenario.

Three people interviewing you asking a lot of scenario based questions. Everyone was really nice and made my feel comfortable. The interview lasted about 45 minutes. It started with a automated call, then a interview over the phone and if all was good with the phone interview you are invited to come in for a interview.