This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Objective 2: SOAP 1.1 Web Service Standards 2.1 List and describe the encoding types used in a SOAP message.
Appendix D: SOAP RPC/Encoded
is somewhat relevant. J2EE 1.4 Web Services have to be capable of the RPC/encoded (SOAP Encoding) messaging style. The emphasis of the exam however is on RPC/literal, Document/literal web services that adhere to the WS-I Basic 1.0a standard. To understand the WS-I Basic standard you have to know what isn't allowed (and why) and what doesn't work.