Mostly "prove you know data structures & algorithms and that you've done undergrad coursework". So compilers, some graphics, but no "1000% contrived" toy problems. Know well-known algorithms/data-structures by heart (but they're no bs, so you won't get super edgy / "prove you're a genius" data-structure interview questions). Know how to recognize exponential time problems.
Check out your Company Bowl for anonymous work chats.