I havent studied much for the exam, but I think if I did, I would have passed!
The exam was not difficult for those who really are architects or experient developers. It is not for the weak at hart!
If you know the differences, advantages and disadvantages between: web-centric x ejb-centric, JSP x JSF, Two tier x three tier you will pass. Another subject that is very important is design patterns! Study GoF and J2EE Patterns SECOND EDITION!
I don�t expect to succeed but it was a very good exercise for the real test.