Do some research on the internet about interviews. There is quite a bit of info out there. You can tailor the job interview
material to this situation, ie. how to best present yourself in 15-30 seconds, eye contact, smiling, etc.
These folks at the interview not only want to know that you will hold up academically, but also personally and professionally as well.
One of my weirdest ?'s was: What was the last foreign film you saw and how did you like it?
They also want to know what kind of person you are, likes, hobbies, etc