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.