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Mean Stack Interview Questions

Last Updated: Sep 06, 2021,
Posted in Interview Questions,
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Mean Stack Interview Questions

Practice Best Mean Stack Interview Questions and Answers

MEAN (short form for MongoDB, Express.js, AngularJS, and Node.js) stack is a public and open-source JavaScript software bundle for building dynamic websites and web applications. Since all elements of MEAN stack aid programs are written in JavaScript, applications are written in any one of the languages for server-side and client-side execution environments. The components of the MEAN stack are higher-level including a web application presentation layer and not including an OS layer.

So, practice below the Best Mean Stack Interview Questions that are very helpful for the freshers & experienced candidates. These Mean Stack Interview Questions and Answers are very popular and asked various times in Mean Stack Interview. apart from this, you can also download below the Mean Stack Interview Questions PDF, completely free.

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Below are the list of Best Mean Stack Interview Questions and Answers

Mean stack is combination four popular JavaScript-based technologies MongoDB, Express, AngularJS and Node that allows developers to develop complete web applications.
Express
is lightweight web framework for Node.js.It provides robust and scalable solutions to build single and multi-page web application. Express is inspired by Sinatra (Ruby framework).
Mongoose is a MongoDB Object Data Modeling (ODM) library for MongoDB and NodeJS.It provides a straight-forward, schema-based solution to model your application data. It includes built-in typecasting, validation, query building, business logic hooks and more, out of the box.
The purpose of Angular and Node Js is totally Different.
AngularJS is front-end framework that deals with UI and client side of an application while NodeJs is a runtime environment useful in building server-side applications.
Run below command to install express
npm install express --save
Routing is a mechanism used by frameworks to decide how a URL/endpoint is responded/handled by the server. Express provides an excellent way to handle applications routing. Below is basic code to handle routing in Express.
var express = require('express')
var app = express()

// respond with "hello world" when a GET request is made to the homepage
app.get('/', function (req, res) {
  res.send('hello world')
});

Node.js is a single-threaded but highly scalable system that utilizes JavaScript as its scripting language. It uses asynchronous, event-driven I/O instead of separate processes or threads. It is able to achieve high output via single-threaded event loop and non-blocking I/O.

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