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

To speed up API responses

Answer

To enforce REST constraints

Answer

To validate API payloads

Question 2

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

Accepted Answer

Swagger UI

Answer

Postman Collections

Answer

GraphQL Playground

Answer

Insomnia REST

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

The resource was not found

Answer

The client is unauthenticated

Answer

The server encountered an internal error

Question 4

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

Accepted Answer

Return paginated results with metadata

Answer

Always return all records

Answer

Return only the first 10 records by default with no indication

Answer

Require the client to specify an exact count

Question 5

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

Accepted Answer

PATCH

Answer

PUT

Answer

POST

Answer

UPDATE

Question 6

What is the role of an API gateway in a back-end architecture?

Accepted Answer

Acting as a single entry point that handles routing, auth, rate limiting, and load balancing

Answer

Directly querying the database on behalf of clients

Answer

Replacing the need for a web server

Answer

Generating API documentation automatically