Aasawaree
This question is best addressed in 'Products and Other Certifications' Forum which has lots of posts related to this exam.
Important topics for 484 include
EJBs - Monson Haefel's book or free Mastering EJB by Ed Roman's book
Strong
Servlets /
JSP knowledge - Specs / Sun Web Component Developer Study Guides.
Exposure to JNDI /
JDBC - Specs are small and they are good enough.
RMI - Some exposure - 1 or 2 chapter from J2EE Books
Design
Patterns - Some knowledge and application.
Please note that this exam has LOTS of topics to be covered and some questions test in-depth knowledge.
It is SCBCD + SCWCD + a lot more rolled into one.
You would be better off using preparatory materials of SCBCD and SCWCD plus browse design patterns and specs.
Best wishes
[ October 08, 2004: Message edited by: v giri ]