Web Development APIs and REST 2

Question 1

Which HTTP status code indicates that a resource was successfully created?

Accepted Answer

201 Created

Answer

201 Created is the standard response when a POST request successfully creates a new resource.

Question 2

What does the HTTP OPTIONS method primarily do in a REST API?

Accepted Answer

Returns allowed methods for a resource

Answer

OPTIONS returns the HTTP methods that the server supports for the specified URL, commonly used in CORS preflight requests.

Question 3

In REST, what does 'statelessness' mean?

Accepted Answer

Each request must contain all information needed to process it

Answer

Statelessness means the server does not store client session state; every request must be self-contained with all necessary context.

Question 4

Which of the following best describes HATEOAS?

Accepted Answer

A constraint where API responses include links to related actions

Answer

HATEOAS (Hypermedia as the Engine of Application State) means responses include hypermedia links that guide clients to possible next actions.

Question 5

What is the purpose of the 'ETag' HTTP header in REST APIs?

Accepted Answer

To enable conditional requests and caching validation

Answer

ETags are identifiers for a specific version of a resource, allowing clients to make conditional requests and avoid downloading unchanged content.

Web Development Practice Test