Express JS Express REST API Development

Question 1

Which HTTP method is conventionally used to create a new resource in a REST API built with Express?

Accepted Answer

POST

Answer

POST is the standard HTTP method for creating new resources, typically sending data in the request body.

Question 2

In a RESTful Express API, what HTTP status code should a successful resource creation return?

Accepted Answer

201 Created

Answer

201 Created indicates that a new resource was successfully created as a result of the request.

Question 3

What HTTP method should be used for partial updates to a resource in REST?

Accepted Answer

PATCH

Answer

PATCH is intended for partial modifications, while PUT replaces the entire resource representation.

Question 4

What HTTP status code should be returned when a requested resource is not found in an Express REST API?

Accepted Answer

404 Not Found

Answer

404 Not Found is the standard response when the server cannot locate the requested resource.

Question 5

Which header should an Express API set to indicate the response body format is JSON?

Accepted Answer

Content-Type: application/json

Answer

The Content-Type header tells the client the media type of the response body; res.json() sets this automatically.

Express JS Practice Test