Our blog on Mean Stack interview questions Blog. An increasingly popular and robust technological stack has rapidly gained ground among web development communities worldwide.

Using Mean’s popular JavaScript-based technologies lets developers quickly build dynamic and scalable web apps.

Demand for experienced Mean developers grows exponentially as more firms utilise their projects.

We have collected frequently requested Mean Stack interview questions in this blog to help prepare you for an upcoming job interview.

Whether you are a mean stack developer, interview questions for experiencedor just starting in the profession, these questions and answers will give a solid introduction to Mean Stack development and help demonstrate your expertise during interviews for developer jobs.

Let’s get going now – get set and prepare to ace that Mean Stack interview!

1. What is Mean Stack, and what technologies does it cover?

Mean Stack is a collection of JavaScript technologies for web application creation.

It includes MongoDB, Express, Angular, and Node.js.

2. Whatare the advantages of using Mean Stack?

One of the significant advantages of Mean Stack is its ability to use JavaScript to create both front and back components.

This allows developers to develop both components separately, preventing conflicts between the front and back-end changes.

Additionally, the platform uses JSON, a lightweight and easy-to-use format commonly used in online web applications.

3. What are some problems associated with JavaScript when using Mean Stack?

JavaScript has problems such as dynamically typed variables and inheritance issues.

To work with Mean Stack, one must be aware of these changes and be familiar with the differences between JavaScript and other post-object-oriented programming languages.

4. Explain Node.js and what its key features are.

Node.js is a JavaScript runtime environment that allows developers to write and run code on the server, enabling them to create a server-side web application backend.

It is easy to learn and has a built-in package manager NPM, allowing the developers to include code written by other developers into their projects without recreating the same functionality.

5. Define the mean stack Express and its key features.

Express is a server-side web application framework that reduces boilerplate code and allows developers to build standard web application features such as request routing and templating.

Express provides built-in routing support, allowing interview questions for mean stack developers to describe the URL endpoints and how the application will respond to those URL methods.

6. What standsfor templating in web development?

Templating combines static views and dynamic data to generate dynamic content for the user.

7. Does Express have a built-in templating engine? If not, what are some supported templating engines?

No, Express does not have a built-in templating engine.

However, it supports several other templating engines, such as Handlebars and Ebug.

8. What remains middleware in Express?

Middleware in Express is a function that has access to request and response variables and executes during the request-response cycle.

This allows for checking if the user is authenticated, sending specific headers, and manipulating the application’s behaviour based on the request.

9. What is MongoDB, and what are its key features?

MongoDB is a document-based no-SQL database system that stores data in a JSON-like format, with a slight JSON variation.

It is written in C++, allowing high-speed queries and easy scalability.

It is schema-less, allowing for flexibility in data models without needing database-level schemas.

MongoDB can be easily scaled to handle large amounts of data by spinning up new clusters.

10. How is data stored in MongoDB?

MongoDB stores data in Bson, which stands for binary JavaScript object notation.

Bison is used to represent and store complex data structures like documents.

11. How can manipulators create and remove collections and data in MongoDB?

Users can create and remove collections and data from pre-configured databases like admin, config, local, and my app.

They can use the “create” command followed by the database’s and the collection’s names to create a new database.

12. What are the basic operations performed in MongoDB?

The basic operations performed in MongoDB are creating, reading, updating, and deleting.

13. How does the document in MongoDB contain the user’s name and email?

Create a document with the user’s name and email by defining the document’s structure in JavaScript.

To insert data into the collection, use the Insert Many functions in MongoDB.

14. Howcan Canister fetch all the data from a MongoDB collection and filter the data to get specific rows and columns?

Can fetch all the data from a MongoDB collection using the find method.

Use query parameters with the find method to filter the data and get specific rows and columns.

15. Explain data in MongoDB, and what are the results of the update operation?

Can update data in MongoDB using the update function.

The function sets the name equal to John Doe, resulting in acknowledged as valid, matched count as one, and modified count as one.

16. What is Angular, and what are its key features?

Angular is a front-end framework created by Google for building JavaScript-based single-page applications.

Its key features include declarative, defining user interface elements using HTML, and component-based.

It allowsmean stack developer interview questionsto write code into three layers: the model, the view, and the controller.

17. What remains the role of the controller in Angular?

The controller in Angular is the middleman between the model and the view, handling requests, data, and interactions.

18. How is the project structure organised in the given scenario?

The project structure has a separate backend and front-end folder.

The front end contains Angular code, while the back includes Node.js, JSON, and Express code.

The backend interacts with the database and returns data as JSON to the front end.

19. What do deprecation warnings indicate in the given scenario?

Deprecation warnings indicate that future versions of Mongo may have configuration options that need to be passed in.

20. How are lists created in Angular, and their persistence?

Lists are created using Angular’s four-off loop and curly braces.

The Angular compiler replaces the code inside the curly braces with the desired JavaScript code.

Lists display tasks similar to the list of items or titles.

21. What remains the fetching records from the database in the given scenario?

Fetching records from the database is necessary to complete the marker.

22. How can a task manager container and task division be created in JavaScript?

A task manager container and task division are created in JavaScript by making a task with the class of task and a link inside the container.

The task is named and moved around to ensure it works.

23. Describe the TypeScript file named task view component in the given scenario.

Opening the TypeScript file named task view component is necessary to create the JavaScript part of the component.

24. What drives assigning the dot root URL to the URL?

Assigning the dot root URL to the URL ensures that the code is executed correctly and the component looks as intended.

25. Where are the methods made?

The methods are made in a new folder of models inside the model’s folder.

26. What is the purpose of the file list dot in the model’s folder?

The file list dot in the model’s folder represents TypeScript and task dots.

27. What should the structure of the model mimic?

The model structure should mimic precisely our database models list.

28. What types are the model, task, and list ID properties?

The model will have a title of type string, our task will have a title of type string, and our list ID will have a title of type string and completed of type Boolean.

29. What is the purpose of creating a web service?

Creating a web service allows the Angular application to understand the response structure that will get back from the tasks.

30. Pardon is the resolution of using the dot task service.

The dot task service aims to get lists and subscribe to them.

31. Howis the subscribe method in the mean stack?

The subscribe method allows us to explain the code or type in the code we wish to execute when the result is received, making it suitable for handling asynchronousinterview questions on mean stack data.

32. What component was created, and what was its functionality?

The Task View component was created, implementing various methods for creating lists and updating tasks.

33. How is the ng on it hook used in the Task View component?

The ng on it hook is used to execute the code inside the component when the result is received, allowing the use of subscribe and other asynchronous data methods.

34. How does it drive registering a new route in the front end?

Registering a new route in the front end is to access the slash list component and fetch tasks related to a specific list.

35. What function is called when the route changes?

The function dot root dot programs dot subscribe is called when the route changes.

36. What is the resolution of a list in the Mean stack?

A mean stack list is an essential list of tasks users can access.

37. How are users redirected to other tasks or lists?

Users are redirected to other tasks or lists using Angular’s built-in routing functionality to routers.

38. What must users implement to display tasks without any tasks?

Users must implement the add list and add functionality to display tasks without any tasks.

39. How are lists deleted in the mean stack?

Lists are deleted by creating a navigation element with the active class marked as active, removing the component marked as active, and returning it to the list.

40. What must be done to redirect users to lists and display the View component when they log in to the homepage?

Users must create new routes and pass in the properties where they wish the URL to be redirected.

41. How does Agular’s router redirect the current URL to the specified URL?

Agular’s router will match and redirect the current URL to the specified URL but does not yet have a list ID.

Your passion and zeal will shine through in these Salesforce lightning MCQ multiple-choice questions; the more each of you takes them, the better your results will be.

1. What is Mean Stack?

JavaScript framework
A collection of JavaScript technologies for creating web applications ✔️
Back-end technology
Front-end technology

2. Which one is a significant advantage of Mean Stack?

It allows developers to develop front-end and back-end components separately. ✔️
Uses a complex format for data exchange
Suitable for all kinds of applications
Requires less setup

3. What does Mean Stack use the data exchange format?

XML
JSON ✔️
YAML
CSV

4. For whom can use Mean Stack be beneficial?

Who are new to JavaScript
Those with a good understanding of JavaScript ✔️
I prefer statically typed languages.
multiple programming languages for web applications

5. Which web application framework is discussed?

Flask
Express ✔️
Django
Ruby on Rails

6. What is the primary purpose of Express?

To reduce boilerplate code and build standard web application features ✔️
Create complex databases
Provide a front-end user interface.
Write complex algorithms

7. Whichcombines static views and dynamic data to generate dynamic content for the user?

Routing
Templating ✔️
Middleware
Authentication

8. What is the definition of middleware in Express?

Handle user authentication
Send specific headers
Manipulate the application’s behaviour based on the request.
All of the above ✔️

9. What remains the primary reason Express is an excellent option for front-end developers?

Complex algorithms
Back-end development ✔️
Robust database management system
Complex front-end user interface

10. Which one is MongoDB?

Server-side web application framework
A document-based no-SQL database system ✔️
Front-end user interface
Complex algorithm

MEAN Stack stands as an effective and flexible technology stack and should continue its rise in popularity over the next several years.

This blog post discussed frequently askedmean stack interview questions and answers, from foundational ideas to more sophisticated aspects.

Understanding the core components of MEAN (MongoDB, Express.js, AngularJS and Node.js), their features and how they interrelate is critical for successfully passing any mean stack developer interview questions and answersfor jobs requiring MEAN stack technologies.

Keep abreast of MEAN stack developments and regularly improve your abilities to remain competitive in the tech sector.

With enough knowledge and preparation, MEAN stack may enable you to demonstrate your competence and land your ideal position.

I hope this blog has provided helpful preparation for your MEAN stack interview.

Best wishes to all!