This test only tests one's ability to recognize and retain a melody at a moment's notice. It's one skill among many, and it only tests relative pitch somewhat. Some of these examples are stupidly obvious, others use such strange, polluted synth sounds that it's hard to make out exactly what's going on.
In college, I always got 100% on tests like these, but the only instrument being used was piano, so perhaps with bizarre synth sounds my ear isn't as good.