Here is my experience of the test. It was medium in toughness.
Not a cramming oriented test .More conceptual question.
Got quite a few questions on coding .Also some interesting one in DnD also code related needed a good understanding of saaj. Got some question related in SwA for mime mapping. I also got quite a lot more questions on JAXP then I was thinking. Very few questions on JAXB. Mainly the questions were on JAXR ,Basic profile ,JAX-RPC ,messge handlers ,JAXP ,J2EE and security. Very basic questions were asked for the BP1.0 . In my opinion reading RMH for Basic Profile is sufficient to give the test. Have a very indepth thorough understanding of JAX-RPC and message handlers. Understanding of J2EE design pattern would be a bonus. In security read WS-security ,SAML ,XKM etc conceptually not too much in detail. Reading just the blueprints and RMH book plus online resources for Security would be sufficient to give the exam.