They formulate questions based on Campbells 7th ed, so anything that's in there is fair game as far as I'm concerned.
However, based on DAT breakdowns, it seems more conceptual, but I'm learning everything just to be safe.
ALSO: If you have the 7th edition, make sure you read ch. 19-21 and take good notes...this seems to be the chapters where the "random" questions come from.