I passed WSD 6 exam (1Z0-897) on tuesday.
I prepared using
MZ study notes and quizIvan notesEnthuware mockJava Web Service up and running 1strestful Java with JAX RS 2.0
Many thanks to you MZ and Ivan for the notes. The notes, the quiz and the mock exam are very helpful and are must read materials. All those materials will guarantee you to pass the exam.
In some questions I don't really understand what I was asked, I just simply eliminated those choices that were not possible
I bought EPractice Java 6 Web Services Lab software too, but save your money and don't buy it!! See https://coderanch.com/t/632045/java-Web-Services-SCDJWS/certification/Disappointed-EPractize
for explanation why