I had the same doubt in my mind, so I asked from Sun Certification team. Here is the response from them - This mail was sent on 9/21/2004.
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Hello,
Thank you for inquiring about our
Java Architect Exam. The current
architect
exam was written for J2EE 1.2 which covers EJB 1.1.
http://suned.sun.com/US/certification/java/java_archj2ee.html Also, for further study material, Sun endorses "Sun Certified Enterprise
Architect for J2EE Technology," by Mark Cade and Simon Roberts.
We will be updating this exam within the next 12 months, however we do
not have
a specific release date at this time. Please stay posted to our
Certification
URL for any updates.
Best of luck,
The Certification Team
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If you want you can quote the specification of messaging as well - her address is Monica Green [
[email protected]]