I can't believe I passed - I thought it was really hard and that there was no way I had passed. I marked at least half of them for review and kept going back. In the end I had to guess the last ones - I had no idea what ARP was, but apparently it's not even on the course, according to the person supervising the exam. I got 557, which I guess is scraping by but hey ! I passed. I just went and sat in my car and burst into tears. Well, I am a bird.