Back-End Development RESTful API Design and Development 2

Question 1

What is the primary purpose of API rate limiting?

Accepted Answer

To restrict the number of requests a client can make in a given time window

Answer

Rate limiting protects the server from abuse and ensures fair usage by capping how many requests a client can make within a time period.

Question 2

Which tool is most commonly used to document REST APIs using the OpenAPI Specification?

Accepted Answer

Swagger UI

Answer

Swagger UI renders OpenAPI Specification files into interactive, browser-based API documentation.

Question 3

What does the HTTP 422 Unprocessable Entity status code mean in a REST API context?

Accepted Answer

The server understood the request but could not process it due to semantic errors

Answer

HTTP 422 indicates the request is well-formed but contains semantic errors, such as validation failures on the payload.

Question 4

Which approach is considered best practice when returning collections in a REST API?

Accepted Answer

Return paginated results with metadata

Answer

Paginated responses with metadata (total count, page, limit) allow clients to efficiently navigate large datasets.

Question 5

Which HTTP method should be used for a partial update of a resource in a REST API?

Accepted Answer

PATCH

Answer

PATCH is used for partial updates, sending only the fields that need to be changed rather than the full resource representation.

Back-End Development Practice Test