A message can be validated against
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XML Schema
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WSDL
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both A and B
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None of the above
C
Correct answer
Explanation
Messages can be validated against both XML Schema (which defines the structure, data types, and constraints of XML messages) and WSDL (which contains schema definitions for web service operations). XML Schema provides structural validation while WSDL validates against the service contract. Both are valid validation mechanisms in SOA environments.