What is Node.js?

• A front-end framework

• A JavaScript runtime built on Chrome’s V8 engine

• A relational database

• A programming language

Which of the following is true about Node.js?

• It is single-threaded and non-blocking

• It is multi-threaded and blocking

• It only supports synchronous programming

• It is not suitable for building APIs

Which command is used to check the installed version of Node.js?

• node -v

• node --check

• npm -v

• node version

What is npm in Node.js?

• Node Programming Module

• Node Package Manager

• Node Processing Method

• New Package Manager

Which file is used to define project dependencies in a Node.js project?

• index.js

• config.json

• package.json

• dependencies.json

How do you import a module in Node.js using CommonJS?

• import module from 'module-name'

• require('module-name')

• include 'module-name'

• fetch('module-name')

What does the fs module in Node.js do?

• Handles file system operations

• Manages frontend styling

• Manages database connections

• Creates web servers

Which of the following frameworks is built on top of Node.js?

• React

• Angular

• Express

• Django

How do you create an HTTP server in Node.js?

• Using the http module

• Using the fs module

• Using the net module

• Using the dns module

What is the main difference between fs.readFileSync() and fs.readFile() in Node.js?

• fs.readFileSync() is asynchronous, while fs.readFile() is synchronous

• fs.readFileSync() blocks execution until the file is read, while fs.readFile() does not.

• fs.readFile() is faster than fs.readFileSync().

• fs.readFileSync() does not require the fs module.