ASP.NET Core Routing & Controllers 2

Question 1

Which attribute binds an action parameter from the URL route data?

Accepted Answer

[FromRoute]

Answer

[FromQuery]

Answer

[FromBody]

Answer

[FromHeader]

Question 2

What does app.MapControllers() do in the minimal hosting model?

Accepted Answer

Maps attribute-routed controller endpoints to the routing system

Answer

Scans for controllers and registers them as services

Answer

Adds conventional routes for all controllers

Answer

Enables model binding on all controllers

Question 3

How do you make a route parameter optional in ASP.NET Core attribute routing?

Accepted Answer

Add a ? after the parameter name: {id?}

Answer

Use [Optional] on the parameter

Answer

Set the parameter default to null in the route

Answer

Use {id:optional}

Question 4

Which helper method creates a 201 Created response with a Location header in an API controller?

Accepted Answer

CreatedAtAction()

Answer

Ok()

Answer

Created()

Answer

StatusCode(201)

Question 5

What does [Bind] attribute do on a model class in ASP.NET Core MVC?

Accepted Answer

Restricts which properties are included during model binding

Answer

Forces all properties to be required

Answer

Disables model binding for the class

Answer

Binds the model to a specific data source

Question 6

Which route constraint restricts a route parameter to integer values only?

Accepted Answer

{id:int}

Answer

{id:integer}

Answer

{id=int}

Answer

{id[int]}