Totally agree with DCurry. If QuarkXpress is spelled wrong, in the trash it goes. Also, if you have no idea what workflow you were using at your last job, the interview is over. Same for the proofers, platesetters, etc. Only put things on your resume that you're sure of also. If given files to work on as a test, don't ask what needs to be done as an open-ended question. Ask, do you want A or B. Don't assume other shops' workflows are setup the same as what you're used to. Ask, should I make sure all of the Black is correctly knocked out / overprinting up front, or will the workflow handle that.
I think in future interviews I'm going to start asking people if they've ever been to b4print.com, just to see if they care, or if they're a sausage.