ASP.NET (Core) MVC Interview Questions

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1. Action Attributes

ASP.NET (Core) MVC Actions Public

Which statements are true about action attributes in ASP.NET (Core) MVC?

(Select all acceptable answers.)

Difficulty

Easy

Time

2min

If an action returns JSON data, it must be decorated with the JsonResult attribute.

If no HTTP verb attribute is defined, HttpGet is used.

There is a built-in attribute for defining view name.

The ValidateAntiForgeryToken attribute prevents CSRF attacks.

The ActionName attribute allows usage of a different action name than the method name.

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2. Passing Data

ASP.NET (Core) MVC MVC pattern Public

Select all the methods that can be used to pass data from the controller to the view.

(Select all acceptable answers.)

Difficulty

Easy

Time

2min

By setting properties on the model that is passed to the view.

By setting properties on the web controls that the view contains.

By using the view's helper methods.

By using ViewData dictionary.

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3. Meal View

ASP.NET (Core) MVC Razor Public New

Consider the following C# model:

public class Meal
{
    public string Name { get; set; }
    public double Calories { get; set; }
    public List<string> Ingredients { get; set; }
}

The following template for Razor view engine accepts a Meal as model. Fill in the blanks with the simplest variants so that correct properties are printed.

<html>
<body>
  <h1>Name: </h1>
  <p>Calories: </p>
  <p>Ingredients:</p>
  <ul>
    @foreach (var ingredient in )
    {
        <li></li>
    }
  </ul>
</body>
</html>

Difficulty

Easy

Time

5min

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4. User Controller

ASP.NET (Core) MVC Routing Public New

Add appropriate routing attributes to the GetUsers and GetUserById actions so that:

GetUsers should activate on URL "/users".
GetUserById should activate on URLs "/users/userId" where userId is a string that represents the id of the user.

Difficulty

Easy

Time

5min

ASP.NET Core MVC Web 2 app, C# 7.0, .NET Framework 4.7

Show starting code

using System;
using Microsoft.AspNetCore.Mvc;

public class UserController : Controller
{
    public IActionResult GetUsers()
    {
        return Content("List of all users.");
    }

    public IActionResult GetUserById(string userId)
    {
        return Content("User with id: " + userId);
    }
}

Report an issue

The GetUser action is correctly routed: Wrong answer
The GetUserById action is correctly mapped: Wrong answer

5. Address Controller

ASP.NET (Core) MVC Actions Public New

Consider the following view, provided here and below, which is placed in Views/Address/Create.cshtml:

@model Address

<!DOCTYPE html>
<html>
<head>
  <title>Create a new address</title>
</head>
<body>
  <form method="post" action="/user/address/save">
    <label asp-for="Street">Street:</label>
    <input type="text" asp-for="Street" />
    <label asp-for="City">City:</label>
    <input type="text" asp-for="City" />
    <input type="submit" value="Submit" />
  </form>
</body>
</html>

Add actions to the AddressController so that:

On requests to "user/address/create", the view above should be returned.
On submitting the form from the view above, AddressController should add the Address that was submitted into the AddressController.addresses field and then redirect to the "user/address/create" URL.

Actions should use attribute routing.

Difficulty

Easy

Time

20min

ASP.NET Core MVC Web 2 app, C# 7.0, .NET Framework 4.7

Show starting code

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

public class AddressController : Controller
{
    public static List<Address> addresses = new List<Address>();
}

public class Address
{
	public string Street { get; set; }

	public string City { get; set; }
}

Report an issue

/user/address/create and /user/address/save URLs are mapped to distinct actions: Wrong answer
/user/address/create URL returns expected view: Wrong answer
Address is added to the AddressController.addresses list when the form is submitted: Wrong answer
After saving the address, user is redirected to /user/address/create URL: Wrong answer

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