IT professionals build, design, and maintain the systems that handle storing, sending, and retrieving information. Employers are looking for individuals who are able to systematically solve the tough and unusual problems that arise in the field. Expect to be asked many hypothetical questions that will assess your thought process when dealing with complex problems.
Why do you want to be in marketing?
This is a pretty basic question, and I kind of fumbled it. Still asked me back for a second-round interview, so I get the feeling they're mostly looking for eager recent graduates that don't necessarily know what they're getting into.