Thanks!
It sure feels good to pass the exam.
The UML questions were easy, so perhaps any beginner book would do. You don't need to focus on advanced notations, but know the basic ones by heart. You should be able to identify what type of an UML diagram when you see one. Class and Sequence diagrams are the most important. Focus on aspects of simple class relationships like dependency, association, aggregation, composition, and multiplicity.
Good luck.
Amgad