Mean Stack Interview Questions

• Q1.

  What is the Mean Stack?

  Mean stack is combination four popular JavaScript-based technologies MongoDB, Express, AngularJS and Node that allows developers to develop complete web applications.

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• Q2.

  What is Express?

  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).

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• Q3.

  Explain Mongoose?

  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.

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• Q4.

  How AngularJS is different from NodeJS.

  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.

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• Q5.

  How to install express?

  Run below command to install express
  npm install express --save

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• Q6.

  Explain Routing in Express.js?

  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')
  });
  

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