I just passed part I today.The test is much easier than what I'd expected.
My preparing materials:
1)Sun Certified Enterprise Architect for J2EE Technology Study Guide, Cade-Roberts
2)UML Distilled 2ed
3) SCEA Nutshell (http://groups.yahoo.com/group/scea_j2ee/files/SCEA-Nutshell/
4) Chris Broecker's notes (http://groups.yahoo.com/group/scea_j2ee/files/
5) WhizLabs SCEA
The questions about design pattern,uml,ejb are easy, so don't worried about them.All of them are basic concepts.
Whizlabs'SCEA is harder than the real one.My highest score is 81%.If you scored low at whizlabs, forget it.
Part I is just the starting point, so don't pay too many attention on it.
I'd paid sun for part II and III, just waiting...