I cleared the SCDJWS exam with 97% earlier this week. Many thanks to all the contributions on this site.
Special thanks to Mikalai for his study guide and quiz, and to RMH for the excellent book.
Resources I used for the exam:
* RMH book (
J2EE Web Services by Richard Monson-Haefel)
* Mikalai's study guide (
http://java.boot.by/wsd-guide/)
* Mikalai's quiz (
http://java.boot.by/wsd-quiz/ totally worth it!)
* Sun's Blueprints (
http://java.sun.com/blueprints/guidelines/designing_webservices/)
Questions on JAXR and Security were the most challenging ones.