XML-based description of web services

XML-based description of web services

• A. WSDL
• B. RESTful
• C. UDDI
• D. WS-Security

Answer: (A)

The XML-based description of a web service is provided by WSDL, the Web Services Description Language. WSDL is written in XML and defines what the service does, the operations it exposes, the messages it uses, the data types involved, and how to access the endpoints (including bindings and protocols). This creates a machine-readable contract that clients can use to generate requests and understand the service interface. RESTful describes an architectural style for building services, often using lightweight data formats like JSON and does not rely on a single XML-based description language. UDDI is a directory for discovering services, acting as a registry rather than describing the service interface itself. WS-Security focuses on securing SOAP messages, not on describing the service’s operations or contracts.

The XML-based description of a web service is provided by WSDL, the Web Services Description Language. WSDL is written in XML and defines what the service does, the operations it exposes, the messages it uses, the data types involved, and how to access the endpoints (including bindings and protocols). This creates a machine-readable contract that clients can use to generate requests and understand the service interface.

RESTful describes an architectural style for building services, often using lightweight data formats like JSON and does not rely on a single XML-based description language. UDDI is a directory for discovering services, acting as a registry rather than describing the service interface itself. WS-Security focuses on securing SOAP messages, not on describing the service’s operations or contracts.