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SDLC Training institute based in Marathahalli, Bengaluru offers the best MERN stack course training, read the entire article to further understand the importance of the subject and why you should get trained from us to sky rocket your career to next level.


We have also provided valuable content about MERN stack to any one searching about it online to know what it is all about and we hope you receive something of value from our blog post, read on.

MERN Stack Developer


The MERN stack developer uses JavaScript stack that’s designed to make the development  process  smoother.

MERN  stack developer uses four open-source components: MongoDB, Express, React, and Node. JS. These components provide an end-to-end framework for developers to work in.

So these was a brief explanation on the basic work function and skills required to be a MERN Stack Developer.

What is MERN Stack?


MERN stack is a web development framework. It consists of MongoDB, ExpressJS, ReactJS, and NodeJS as its working components.

Here are the details of what each of these components is used for in developing a web application when using MERN stack:

    • MongoDB: A document-oriented, No-SQL database used to store the application data.
    • NodeJS: The JavaScript runtime environment. It is used to run JavaScript on a machine rather than in a browser.
    • ExpressJS: A framework layered on top of NodeJS, used to build the backend of a site using NodeJS functions and structures. Since NodeJS was not developed to make websites but rather run JavaScript on a machine, ExpressJS was developed
    • ReactJS: A library created by Facebook. It is used to build UI components that create the user interface of the single page web application.

MERN Stack Developer Salary


The average annual salary of a MERN Stack Developer in India is roughly around Rs. 5.3 – 6.4 LPA.

Fresher’s (having 0-2 years of experience) can earn a starting salary of Rs. 3.7 – 5 LPA.


MERN Stack Full Form


MERN stands for MongoDB, Express, React, Node, after the four key technologies that make up the stack.

  • MongoDB – document database
  • Express(.js) – Node.js web framework
  • React(.js) – a client-side JavaScript framework
  • Node(.js) – the premier JavaScript web server


MERN Stack vs Full Stack

mern stack vs full stack

MERN stack programmers cover the full web development cycle from front-end development to back-end development using JavaScript.Full stack programmers each time get the power to switch between the front-end and the back-end development based on the needs of the project.
MERN stack supports model view controller (MVC) architecture to make the development process flow smoothly.The significant advantage of enrolling a full stack coder is people are not only tied to a web development but can also look at the entire design structure.

In MERN stack with only JavaScript developers only need to be proficient in JavaScript and JSON.


Recruiting a specialized front-end developer and a separate back-end developer will increase the cost but full stack development company can work on the both side
A professional MERN stack developer is the combination of four technologies: mongo dB, express, react, node.js.Professional full stack development agency is able to take the ownership of complete design and implement the process on the site.

A MERN stack programmer follow with a pre-built extensive suite of technologies tools.


Full stack programmers are able to get up to the data with the new technologies and tools faster than someone particularize only in front-end or back technologies.

MERN Stack Projects

  • React movie search app
  • Instagram clone in Ionic
  • Building a blog with Gatsby
  • Food ordering app with Strapi and Next.js
  • Build a JavaScript powered Candy Crush

For more details, Click here



MERN Stack Developer Jobs

mern stack developer jobs


There are over 19,100 MERN Stack Developer jobs available in india as of 2021 IT market.

If you get trained from SDLC training institute, we guarantee you 100% job placement.


MERN Stack Example Application


MERN stack is the name given to a set of JavaScript based technologies used in developing web applications

MERN is the acronym name given to the set of technologies including Mongo DB, Express JS, React JS/ Redux and Node JS.

Among these technologies Mongo DB is a database system, Node JS is a back-end runtime environment, Express JS is a back-end web framework and React is a front-end framework.


MERN Stack Logo

Mern Stack Logo



mern stack ogo transparent





Here we have put up the two variations of MERN Stack Logo, we hope you find it useful in your projects.


MERN Stack Job Oriented Companies


Here we have mentioned Top 10 companies hiring for MERN Stack Developers, and the company names mentioned here are clickable and we hope you find it valuable in your search for the dream job.

MERN Stack Tutorial For Beginners


best mern stack tutorial bangalore sdlc


Get the best MERN Stack tutorial for beginners both online and offline with lifetime support from SDLC training institute based in Bengaluru.

We have faculties with over 15 years of industry experience and a track record of placing thousands of students in reputed IT companies from all over india.


Top 65 MERN Stack Interview Questions

mern stack interview questions





1 How does React work?

2 What are props in React?

3 What are the advantages of ReactJS?

4 What is props in ReactJS?

5 What is virtual DOM?

6 Which are the most important features of MongoDB?

7 How is React different from AngularJS (1.x)?

8 What Is Replication In MongoDB?

9 What are Higher-Order components?

10 What are the differences between a class component and functional component?

11 What are the key features of Node.js?

12 What are the limitations of ReactJS?

13 What do you mean by Asynchronous API?

14 What is Callback Hell?

15 What is reconciliation?

16 What is the difference between returning a callback and just calling a callback?

17 What is the point of Redux?

18 What’s the difference between an “Element” and a “Component” in React?

19 When should we embed one document within another in MongoDB?

20 When to use a Class Component over a Functional Component?

21 Does Mongodb Support Foreign Key Constraints?

22 Explain advantages of BSON over JSON in MongoDB?

23 How Node prevents blocking code?

24 How can you achieve transaction and locking in MongoDB?

25 How does Node.js handle child threads?

26 How to avoid Callback Hell in Node.js?

27 How to query MongoDB with “like”?

28 If Node.js is single threaded then how it handles concurrency?

29 Rewrite promise-based Node.js applications to Async/Await Problem.

30 What are Pure Components?

31 What are React Hooks?

32 What are advantages of using React Hooks?

33 What is Aggregation in MongoDB?

34 What is JSX?

35 What is Key and benefit of using it in lists?

36 What is ReactDOM?

37 What is Sharding in MongoDB?

38 What is Stream and what are types of Streams available in Node.js?

39 What is a Blocking Code?

40 What is prop drilling and how can you avoid it?

41 What is the alternative of binding this in the constructor?

42 What is the difference between ShadowDOM and    VirtualDOM?

43 What’s the Event Loop?

44 What’s the difference between useRef and createRef?

45 What’s the difference between a “smart” component and a “dumb” component?

46 Do Hooks replace render props and higher-order components?

47 How replication works in MongoDB?

48 How to apply validation on Props in ReactJS?

49 Is Node.js entirely based on a single-thread?

50 Is it possible to use Class in Node.js?

51 Update MongoDB field using value of another field

52 What is the React context?

53 What is the difference between ReactJS and Angular?

54 What is the purpose of super(props)?

55 When to Redis or MongoDB?

56 When to not use Node.js?

57 Why is a covered query important?

58 Why would you need to bind event handlers to “this”?

59 Explain the result of this code execution

60 How V8 compiles JavaScript code?

61 How does libuv work under the hood?

62 How to find document with array that contains a specific value?

63 Rewrite the code sample without try/catch block

64 Where does MongoDB stand in the CAP theorem?

65 Why should you separate Express app and server?


Learn MERN Stack from SDLC Training


  • Get 100% Job Guarantee Program | 5 + Lakhs per Annum Salary Packages
  • 3 to 4 month plus training according to student knowledge
  • Become a MERN Stack developer like Santhosh
  • Every week we will be starting fresh batches,
  • Limited Number of Seats is Available, so register now
  • Program Duration will be 6 to 8 Hours a Week
  • Learning Format will be Both Online and Classroom.
  • World Class Online Classes
  • Live Class Recording will be provided

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  • Projects Suitable for Present Industry Requirements
  • Lifetime access to high quality course content
  • In demand industry tools and skills
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Why SDLC training Institute is The Best MERN Stack Training Institute in Bangalore with Placement


  • Because we provide full practical and full real-time training.
  • Assessment will be conducted for each module,
  • Resume preparation with project explanation
  • Will be conducting interview after course completion.
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