Do you think that Sun Certified Enterprise Architect for J2EE Technology Study Guide by Mark Cade, Simon Roberts AND Sun Certified Enterprise Architect for J2EE Study Guide (Exam 310-051) by Paul Allen, Joseph Bambara enough for the exam or these ones are just an guide.
These books are sufficient to pass the part I of the exam. You will most likely need a lot more books for Parts II and III. The books you have mentioned includes a case study at the end. However, IMO you can only use them as a reference, and not a cookie-cutter solution to all J2EE applications. As many have noted( including my self in the reviews of these two books in Book Reviews forum ), even coverage of the case study is incomplete and at some points very ambiguous.
I am not discouraging you from buying any or both of these books. Just remember you will need a lot more.
Open Group Certified Distinguished IT Architect. Open Group Certified Master IT Architect. Sun Certified Architect (SCEA).