API / Swagger Interview questions

What are the key components of Swagger?

The Swagger toolset is built from a small number of complementary tools, each covering a different stage of working with an OpenAPI document.

Tool	Purpose
Swagger Editor	Browser-based or local editor for writing and live-validating OpenAPI YAML/JSON
Swagger UI	Renders an OpenAPI document as interactive, browsable API documentation
Swagger Codegen	Generates client SDKs and server stubs in many languages from a spec
Swagger Hub	SmartBear's hosted platform for collaborative API design and versioning
Swagger Inspector	Tool for testing live API calls and generating an OpenAPI definition from them

A typical workflow touches several of these in sequence: writing or editing the spec in Swagger Editor, viewing it in Swagger UI to sanity-check the developer experience, and generating client code with Codegen once the spec is stable enough to share with API consumers.

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Which tool generates client SDKs from an OpenAPI spec? Swagger Codegen

✓ Correct! Well done.

Swagger UI

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Swagger Inspector

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What is Swagger Hub? A native code compiler

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A database migration tool

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SmartBear's hosted platform for collaborative API design

✓ Correct! Well done.

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What are the supported formats for writing an OpenAPI document? What is $ref used for in OpenAPI documents? What is Swagger Editor? What is a schema in OpenAPI? List the HTTP methods supported in OpenAPI operations? Describe the components section in OpenAPI 3.0? What is the OpenAPI Specification? What is Swagger UI? Define paths in an OpenAPI document? What are operations in OpenAPI? What is the purpose of the info object in OpenAPI? What are tags used for in Swagger? What is a parameter in OpenAPI, and what are its types? What is a response object in OpenAPI? What is Swagger? What is the purpose of Swagger? What is the difference between Swagger and OpenAPI? What are the key components of Swagger? What is Swagger Codegen? How do you use Swagger annotations in a Java Spring Boot application?

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