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About the test

The Node.js and Express.js online test evaluates candidates’ knowledge of programming in the Javascript language on the Node.js environment and building applications with Express.js

It is an ideal test for pre-employment screening. A good Node.js developer should be able to solve problems using Javascript and work with the Express.js library to build robust and scalable web services.

The online test requires candidates to answer multiple choice, fill-in-the-blank, and coding questions about Javascript and Express.js.

Sample public questions

Easy
3 min
mca
Public
Express.js
Express.js Middleware
HTTP Routing

A blogging application is built using an Express.js backend. The backend serves the frontend code through the public directory and also serves a few static files for the website through the static directory. The code for Express.js application is:

const express = require("express");
const path = require("path");
const app = express();

app.use(express.static(path.join(__dirname, "public")));
app.use("/images", express.static(path.join(__dirname, "static", "images")));
app.use("/files", express.static(path.join(__dirname, "static", "manuals")));

app.listen(80, () => {
  console.log("Blogging app listening on port 80");
});

Below is the folder structure of the application:

Folder structure of application.

Which endpoints will return a status code of 200 for the above application?

Easy
3 min
mca
Public
Node.js
NPM

Consider the following package.json for a Node.js application:

{
  "name": "skill-measure-app",
  "private": true,
  "version": "1.0.0",
  "main": "lib/main.js",
  "scripts": {
    "build": "npm run cleanup & npm run test & npm run publish",
    "cleanup": "rm -fr ./lib",
    "test": "jest",
    "publish": "npm publish lib"
  },
  "dependencies": {
     "jest": "^23.0.1",
     "custom-package": "file:../custom-package"
  }
}

Select all the correct statements.

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Skills and topics tested

  • Node.js
  • Modules
  • Events
  • Asynchronous Programming
  • Async-Await
  • Promise
  • JSON
  • Stream
  • NPM
  • Event Loop
  • Bug Fixing
  • Event Emitter
  • Exceptions
  • Express.js
  • HTTP Routing
  • Express.js Middleware
  • Forms
  • Error Handling
  • HTTP

For job roles

  • Express.js Developer
  • Node.js Developer

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