Top 50+ MVC Interview Questions and Answers for Job Interview
Tejasvee Sharma
Nov 25, 2021
MVC interview questions and answers are provided on this page to help the professionals and freshers to prepare for their job interviews. You can practice these top MVC Interview questions and clear your interview. Here on this page, we have covered all the Model-View-Controller interview questions which were often asked in the interview of big MNCs. On this page, you will find almost all the related questions of MVC.
About MVC: The Model-View-Controller (MVC) is a structured pattern that divides an application into three core components that are the model, the view, and the controller. As per their name, Each of these main components is built to manage particular development aspects of an application.
MVC stands for Model-View-Controller is a software architecture pattern used to develop web applications. As per the name MVC handle the three objects, Model, View, and Controller.
2. Explain Model-View-Controller that is represented in the MVC application?
Model: It shows the application data domain. In means, an application’s business logic is kept within the model and it also maintains data.
View: It shows the UI that communicates with end-users. All the user interface (UI) logic comes under View.
Controller: It responds to the user’s actions. Based on user actions, the corresponding controller answers within the model and chooses a view to concentrate on that displays the user interface. The user input logic is controlled within the controller.
3. Name the assembly to define the MVC framework
The Model-View-Controller (MVC) framework is defined in System.Web.Mvc assembly.
4. Name different return types of a controller action method
View Result
JavaScript Result
Redirect Result
JSON Result
Content Result
5. How do we differentiate between adding routes to an MVC application and a webform application?
We use MapPageRoute() method in the webform application of the RouteCollection class, whereas we use MapRoute() method to add routes to an application in MVC.
6. Tell the two ways to add constraints to a route?
Use regular expressions
Use an object that allows IRouteConstraint Interface
7. Tell some advantages of MVC?
MVC separates your project into various segments to make the development easy
MVC is easily editable that benefits in less development and maintenance cost of the project
It makes the project systematic
It clearly separates business logic and presentation logic
Each MVC functioning has different responsibilities
The development progresses in parallel
MVC is so easy to manage and maintain
All classes and objects are independent.
8. Explain these functions “beforeFilter()”,”beforeRender()” and “afterFilter()” in Controller?
beforeFilter(): This function works in a controller before every action. It’s checking for an active session or checking user permissions.
beforeRender(): It is run after controller action logic, but before the view is rendered. Generally, this function is not used but If you are calling render() function manually before the end of a given action.
afterFilter(): After every controller action and after rendering is done this function is called.
9. Explain the role of Abstraction, Presentation, and Control components in MVC?
Presentation: It is a visual display of abstraction within the application
Abstraction: In the application, it is business domain functionality.
Control: It keeps consistency among the system abstraction and the presentation to communicate with other controls in a system
10. Tell some drawbacks of the MVC model?
It is a little complex.
There is the inadequacy of data access in view.
In the Modern User interface, MVC is difficult to use.
For parallel development, multiple programmers are required.
You do require knowledge of multiple technologies.
11. What do “ActionFilters” do in MVC?
To execute logic while running or executing MVC action in MVC “ActionFilters” is required.
12. Tell the stages of the execution of an MVC project?
The stages of the execution of an MVC project are:
Receive the first request for the application
Perform routing
Create an MVC request handler
Create Controller
Execute Controller
Invoke action
Execute Result
13. Explain routing and its 3 segments?
Routing helps in mapping the URL or URL structure with the Controller.
The three segments for routing are:
ControllerName
ActionMethodName
Parameter
14. Explain the process of routing in the MVC pattern?
There are multiple routes or groups of routes collectively called the RouteCollection, which contains registered routes in the application. This RegisterRoutes method records the routes in the group. A route sets the URL pattern and uses a handler if a request matches the pattern.
The MapRoute first parameter is to name of the route. The second parameter is to define a pattern to which the URL matches. And the last i.e. third parameter is to place the default values if not determined.
15. How are you able to navigate from one view to other views by using a hyperlink?
Use the “ActionLink” method which makes a simple URL that navigates to the “Home” controller and raises the “GotoHome” action.
Collapse / Copy Code
<%= Html.ActionLink(“Home”, “Gotohome”) %>
16. Name the ways to maintain sessions in MVC?
tempdata, viewdata, and viewbag are the three ways in which sessions are maintained in MVC.
17. Explain Temp data, View data, and View Bag?
Temp data: It maintains data during shifting from one controller to another controller.
View data: It maintains data during shifting from the controller to view.
View Bag: It’s a dynamic wrapper around view data.
18. Describe partial view in MVC?
It helps in reducing code duplicity and renders a portion of view content. Simply, partial view permits rendering a view within the parent view.
19. Ways to implement Ajax in MVC?
There are two ways to implement Ajax in MVC which are:
Ajax libraries
Jquery
20. Differentiate between “ActionResult” and “ViewResult”?
“ActionResult” is an abstract class whereas “ViewResult” is taken from the “AbstractResult” class. “ActionResult” has multiple derived classes such as “JsonResult”, “FileStreamResult” and “ViewResult”. “ActionResult” is best to derive different views dynamically.
21. What class to use to send the result back in JSON format in MVC?
“JSONRESULT” class can be used to send the result back in JSON format in MVC.
22. Tell us the difference between Partial View and View?
View does contain a layout page and Partial View doesn’t.
Before view, viewstart page is rendered whereas Partial View doesn’t verify viewstart.cshtml.
View have markup tags such as body, html, head, title, meta, etc. and Partial View don’t have markup and render within the view.
The view is not lightweight as compared to Partial View
23. Name all types of results in MVC?
There are 12 types of results out of which “ActionResult” class is the main class and the other 11 are their sub-types:
ViewResult
PartialViewResult
EmptyResult
RedirectResult
RedirectToRouteResult
JsonResult
JavaScriptResult
ContentResult
FileContentResult
FileStreamResult
FilePathResult
24. Why NonActionAttribute is important?
All controller class public methods are considered as the action method and if you want to change this default method, then you need to add NonActionAttribute with a public method
25. Explain the use of route {resource}.axd/{pathinfo}?
The default route stops requests for a web resource file like Webresource.axd or ScriptResource.axd from reaching the controller.
26. Tell the execution order of the filters, if multiple filters are implemented?
The execution order of the filters would be like this:
Authorization filters
Action filters
Response filters
Exception filters
27. Tell the ASP.NET filters which are executed in the end?
“Exception Filters” are the ASP.NET filters that were executed in the end.
28. Tell razor views file extensions?
The file extensions for razor views are:
.cshtml: when the programming language is C#.
.vbhtml: when the programming language is VB.
29. Tell us the two ways for adding constraints to a route?
By using regular expressions
By using an object that starts the IRouteConstraint interface
30. Tell us the two instances where routing is not required or implemented?
When a physical file matches the URL pattern
When routing is not enabled for a URL pattern
31. Tell some features of MVC?
High testability, easy, extensible, frictionless, and pluggable framework.
Full control on HTML and URLs
Leverages of existing and updated features provided by ASP.NET, JSP, Django, etc.
Clear separation of logic: Model, View, Controller.
Parting of application tasks based on business logic, Ul logic, and input logic.
URL Routing for SEO Friendly URLs. Powerful URL- mapping for comprehensible and searchable URLs.
Support for Test Driven Development (TDD).
32. Why were Bundling and minification introduced in MVC?
The main function of bundling and minification is to progress the request load time. It progresses the load time by reducing the number of requests sent to the server and also reducing the request asset’s (JavaScript and CSS) size.
33. Differentiate between 3-tier Architecture and MVC Architecture?
Communication: 3-Tier architecture patterns don’t communicate directly with the data layer and in MVC Architecture All layers communicate directly using triangle topology
Usage: 3-tier is mostly used in web applications where the client, data tiers, and middleware works on physically separate platforms. In MVC it is used on applications that work on a single graphical workstation
34. Explain Spring MVC?
Spring MVC or Spring Web MVC is a framework that gives MVC architecture in an application and implements ready components making the web app more adjustable and adaptable. This framework or architecture uses all the elementary traits like dependency injection, light-weight, integration, inversion of control, etc. By using DispatcherServlet you can implement MVC in Spring Framework.
35. Tell some important points to keep in mind while creating an MVC application?
The major point is to keep in mind is that ASP.net MVC cannot replace ASP.Net web forms-based applications.
The MVC app development approach is decided based on application requirements and features provided by ASP.net MVC to fulfill the development needs.
ASP.NET MVC has a more complex application development process than web forms-based applications.
Application maintenance is always higher with separate application tasks.
36. Create a code in CodeIgniter?
<?=$title?>
As opposed to
<?php
echo $title;
?>
Control structures are usually written as follows
<?php foreach ($customers as $customer): ?>
<li>
<p><?=$customer->first_name?><p>
</li>
37. Generate a web application both webforms and MVC?
Include the given MVC assembly references in the web forms application and a hybrid application is created.
System.Web.Mvc
System.Web.Razor
System.ComponentModel.DataAnnotations
38. Tell the attribute of assigning an alias name for ASP.NET Web API Action?
By using the given attribute we can assign an alias name for Web API action as we do in ASP.NET MVC by using the “ActionName” attribute as follows:
[HttpPost]
[ActionName("SaveStudentInfo")]
public void UpdateStudent(Student aStudent)
{
StudentRepository.AddStudent(aStudent);
}
39. Explain the difference between MVC and WebAPI?
By using the MVC framework you can develop or create applications with User Interface. In MVC views can easily build a user interface. Whereas WebAPI is used for creating HTTP services and other applications can use WebAPI methods to fetch that data.
40. How does Web API returns JSON data only?
Add code in WebApiConfig.cs class in any MVC Web API Project:
//JsonFormatter
//MediaTypeHeaderValue
Config.Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/json"));
1
2
3
//JsonFormatter
//MediaTypeHeaderValue
Config.Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/json"))
41. Differentiate between MVVM and MVC?
In MVC a controller is the entry to the Application and in MVVM View is the entry point.
MVC is an old model and MVVM is the new model
MVC is complicated to read, change and reuse this model and in MVVM the debug process is difficult to understand with complex data bindings.
MVC model components can be tested separately whereas MVVM is easy for unit testing and code is event-driven.
<?php
class Opinion_poll_model extends CI_Model
{
public function __construct()
{
$this->load->database();
}
public function total_votes()
{
$query = $this->db->select('COUNT(choice) as choices_count')->get('js_libraries');
return $query->row()->choices_count;
}
public function get_results()
{
$libraries = array("", "JQuery", "MooTools", "YUI Library", "Glow");
$table_rows = '';
for ($i = 1; $i < 5; $i++)
{
$sql_stmt = "SELECT COUNT(choice) choices_count FROM js_libraries WHERE choice = $i;";
$result = $model->
select($sql_stmt); $table_rows .= "<tr><td>" . $ libraries [$i] . " Got:</td><td><b>" . $result[0] . "</b> votes</td></tr>";
}
public function add_vote($choice)
{
$ts = date("Y-m-d H:i:s"); $data = array('choice' => $choice, 'ts' => $ts); $this->db->insert('js_libraries', $data);
}
}
?>
47. What are the benefits of using PHP MVC Framework?
Hide all the complex implementation and make it simpler.
Use Standard methods to build applications.
The base implementation of various activities like connecting to the database, sanitizing user input, etc. is partially implemented in advance which increases the developer’s productivity.
Adherence to developer’s coding standards
48. Name some PHP MVC frameworks?
CodeIgniter: It’s lightweight and very easy to understand. It has built libraries that help in creating websites and applications quickly. Users who have less knowledge of OOP programming can use this PHP MVC framework.
Kohana: It is a Hierarchical Model View Controller (HMVC) which is a safe, secure, and lightweight framework. It has good components which help in quickly developing applications.
CakePHP: It is recognized for its concepts like, software design patterns, convention over configuration, ActiveRecord, etc.
Zend: It is a strong framework that is totally secure, reliable, fast, and scalable. It supports Web 2.0 and the creation of web services.
It structures APIs from vendors like Amazon, Google, Flickr, Yahoo, etc. It’s perfect for developing business applications.
49. State the steps to create the request object?
There are 4 steps to create a request object which are:
Fill the route
Fetch the route
Create a request context
Create a controller instance
50. Explain TempData in MVC?
It is a kind of dictionary object which temporarily saves data for short time. The MVC’s TempDataDictionary class performs as a Controller base-class instance property. It has the ability to store data for an HTTP request.
