DevNet Associate (DEVASC) v1.0Understanding and Using APIsEasy
A developer is designing a new microservice that needs to interact with several internal Cisco APIs. To ensure consistent data types and clear communication contracts, the developer wants to use a specification that clearly defines the API's endpoints, operations, parameters, and responses. Which specification is best suited for this purpose?
- AJSON Schema
- BOpenAPI Specification
- CSOAP
- DWSDL
Show answer & explanationAnswer & explanation
Correct answer: B. OpenAPI Specification
OpenAPI Specification (formerly Swagger) is the industry standard for defining and documenting RESTful APIs. It provides a language-agnostic interface description for REST APIs, allowing both humans and computers to discover and understand the capabilities of the service.
Why the other options are wrong
- A. JSON Schema is used for validating JSON data structures, but it doesn't define the entire API contract including endpoints and operations.
- C. SOAP is a protocol for exchanging structured information, not a specification for defining REST APIs.
- D. WSDL is primarily used for defining SOAP web services, not RESTful APIs.
OpenAPI Specification (OAS)
A language-agnostic, human-readable specification for describing RESTful APIs, facilitating API discovery, understanding, and consumption.
- Defines endpoints, operations, parameters, authentication methods, and response structures.
- Enables automated generation of API documentation, client SDKs, and server stubs.
- Formerly known as Swagger Specification.
Memory trick: Open doors to understanding with a clear API map.