This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I dont quite recall if I was asked on UML of any of the patterns. But this is something that one would want to learn from understanding perspective. We do ask people to draw out diagrams of patterns that they know of. It brings lot of clarity.