A SOAP-based Web service is essentially: Select the correct answer.

Question

Options

• Asolution logic that can only be accessed via HTTP methods
• Bsolution logic accessible via binary RPC protocols
• Csolution logic that has been shaped by service-orientation design principles
• Dsolution logic that can be accessed via a published WSDL definition

• A
  3% (1)
• B
  3% (1)
• C
  6% (2)
• D
  87% (27)

Explanation

SOAP-based Web services are defined by their use of WSDL (Web Services Description Language) - a published WSDL definition describes the service's operations, message formats, and endpoints, making it the mechanism by which clients discover and interact with the service. Option A is wrong because SOAP is protocol-agnostic and can run over SMTP, JMS, or TCP - not just HTTP. Option B is wrong because SOAP uses XML-based messaging, not binary RPC protocols (that's more like CORBA or gRPC). Option C is wrong because service-orientation principles are an architectural design philosophy that can apply to REST, SOAP, or other paradigms - it doesn't specifically define what a SOAP service is.

Memory tip: Think "SOAP = WSDL contract." Just as a legal service requires a published contract to be actionable, a SOAP Web service requires a published WSDL to be consumable - the WSDL is the service from the client's perspective.

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