Back-End Development RESTful API Design and Development

Question 1

Which HTTP method is idempotent and should be used to fully replace a resource?

Accepted Answer

PUT

Answer

PUT is idempotent, meaning multiple identical requests produce the same result, and it fully replaces the target resource.

Question 2

What HTTP status code should a REST API return when a resource is successfully created?

Accepted Answer

201 Created

Answer

201 Created is the standard response for a successful POST request that results in the creation of a new resource.

Question 3

Which of the following is a constraint of REST architecture?

Accepted Answer

Statelessness

Answer

Statelessness means each HTTP request must contain all the information needed to process it, with no session stored on the server.

Question 4

What does HATEOAS stand for in REST API design?

Accepted Answer

Hypertext As The Engine Of Application State

Answer

HATEOAS is a REST constraint where the API response includes hyperlinks that guide the client to available actions.

Question 5

Which HTTP status code indicates that the client is not authorized to access a resource (authentication required)?

Accepted Answer

401 Unauthorized

Answer

401 Unauthorized means the request lacks valid authentication credentials, prompting the client to authenticate.

Back-End Development Practice Test