Directory service that lists all available services.

Directory service that lists all available services.

• A. WSDL
• B. UDDI
• C. RESTful
• D. Service Registry

Answer: (B)

Discovering available services in a distributed system relies on a directory that can publish and locate those services. UDDI, which stands for Universal Description, Discovery, and Integration, is the classic registry designed for this purpose. It acts as a centralized directory where providers publish details about their web services, including how to access them and where to fetch their descriptions (such as WSDL files). Consumers can search the registry by keywords, categories, or business relationships to find suitable services and then retrieve the necessary metadata to bind and use them at runtime. WSDL is just a description of a single service’s interface, not a directory of many services. RESTful refers to an architectural style for APIs rather than a discovery registry. A generic Service Registry is a broad concept, but UDDI is the established directory service that specifically lists available services.

Discovering available services in a distributed system relies on a directory that can publish and locate those services. UDDI, which stands for Universal Description, Discovery, and Integration, is the classic registry designed for this purpose. It acts as a centralized directory where providers publish details about their web services, including how to access them and where to fetch their descriptions (such as WSDL files). Consumers can search the registry by keywords, categories, or business relationships to find suitable services and then retrieve the necessary metadata to bind and use them at runtime. WSDL is just a description of a single service’s interface, not a directory of many services. RESTful refers to an architectural style for APIs rather than a discovery registry. A generic Service Registry is a broad concept, but UDDI is the established directory service that specifically lists available services.