API API Documentation and Design

Question 1

What is OpenAPI Specification (OAS)?

Accepted Answer

A standard format for describing REST API structure and behavior

Answer

A programming language for APIs

Answer

An API testing framework

Answer

A server infrastructure standard

Question 2

Which file format is most commonly used for OpenAPI 3.0 specifications?

Accepted Answer

JSON or YAML

Answer

CSV

Answer

XML

Answer

INI

Question 3

What is Swagger UI used for?

Accepted Answer

Rendering interactive API documentation from an OpenAPI spec

Answer

Writing API code

Answer

Load testing APIs

Answer

Generating test data

Question 4

What is 'API versioning' and why is it important?

Accepted Answer

Managing changes to an API without breaking existing clients

Answer

Tracking API uptime

Answer

Counting API users

Answer

Version-controlling the server OS

Question 5

Which API versioning strategy includes the version in the URL path?

Accepted Answer

URL path versioning

Answer

Header versioning

Answer

Query parameter versioning

Answer

Media type versioning

Question 6

What does 'API-first design' mean?

Accepted Answer

Designing the API contract before writing implementation code

Answer

Building the API before the front end and back end

Answer

Prioritizing API performance over features

Answer

Deploying the API before testing