I didn't take the test, as I didn't take enough Arabic in school. So take this with a grain of salt.

That said, my Arabic professor did teach at Monterey before coming to Cornell, and he eventually left over fights with lots of people over what he called their insistence upon testing orally in fusha rather than colloquial dialects. Of course, the argument for fusha was that colloquial varies by region, but I would be prepared for that, since otherwise they'd have to match up your dialect with the interviewer's.

That's all I can really offer.

Matt