API API Documentation & Specification

Question 1

What is the OpenAPI Specification (OAS) primarily used for?

Accepted Answer

Defining a standard, machine-readable description of REST APIs

Answer

Running load tests on APIs

Answer

Encrypting API traffic

Answer

Managing API rate limits

Question 2

Which tool generates interactive API documentation from an OpenAPI Specification file?

Accepted Answer

Swagger UI

Answer

Postman

Answer

JMeter

Answer

Newman

Question 3

What is the purpose of an API 'schema' in the context of testing?

Accepted Answer

Describe the structure and data types of request and response bodies

Answer

Define which users can access the API

Answer

Measure API performance

Answer

Log API traffic

Question 4

What file format is most commonly used to write OpenAPI Specification files?

Accepted Answer

YAML or JSON

Answer

CSV

Answer

XML

Answer

Markdown

Question 5

What does 'API versioning' solve in API design and documentation?

Accepted Answer

Allows backward-compatible evolution of the API without breaking existing clients

Answer

Improves API response time

Answer

Encrypts API payloads

Answer

Manages user authentication

Question 6

What is 'design-first' API development?

Accepted Answer

Defining the API specification before writing any implementation code

Answer

Writing frontend before backend

Answer

Designing the database schema first

Answer

Creating UI mockups before coding