MCSD Web API and RESTful Services

Question 1

What HTTP status code should a successful POST request that creates a resource return?

Accepted Answer

201 Created

Answer

HTTP 201 Created indicates a new resource was successfully created, typically with a Location header pointing to it.

Question 2

In ASP.NET Web API, which attribute maps an action to HTTP GET requests?

Accepted Answer

[HttpGet]

Answer

The `[HttpGet]` attribute explicitly marks a Web API action to respond to HTTP GET requests.

Question 3

What does REST stand for?

Accepted Answer

Representational State Transfer

Answer

REST stands for Representational State Transfer, an architectural style for designing networked APIs.

Question 4

Which HTTP verb is idempotent and used to fully replace an existing resource?

Accepted Answer

PUT

Answer

PUT replaces the entire resource at the target URL and is idempotent — calling it multiple times produces the same result.

Question 5

What does the `[FromBody]` attribute do in ASP.NET Web API?

Accepted Answer

Binds the action parameter from the HTTP request body

Answer

`[FromBody]` tells Web API to deserialize the HTTP request body (typically JSON) and bind it to the parameter.

MCSD Exam Practice Test