Quiz for Node.js and npm

Q1: What is the purpose of Node.js in React development?

A. To style React apps B. To host a database C. To provide a JavaScript runtime for building and running tools D. To deploy to the cloud

Q2: What does npm stand for?

A. Node Project Manager B. Node Package Manager C. New Programming Module D. Next Page Module

Q3: Which command is used to check the installed Node.js version?

A. node -v B. npm -version C. npx -v D. node install

Q4: Which command installs the React app using Create React App?

A. npx create-react-app my-app B. npm init react-app C. npm install react-app D. npx init react

Q5: Which file lists all npm packages installed for a project?

A. package.txt B. node_modules C. package.json D. dependencies.json

Q6: What is the purpose of the node_modules folder?

A. Stores system files B. Contains installed npm packages C. Includes server configurations D. Contains JSX templates

Q7: Which command updates npm to the latest version?

A. npm upgrade B. npm version update C. npm install -g npm D. npm update -all

Q8: What is the use of the --save flag in npm install?

A. It saves the file B. It installs dev dependencies C. It adds the dependency to package.json D. It updates the Node version

Q9: Which command is used to install all project dependencies listed in package.json?

A. npm start B. npm init C. npm install D. npm build

Q10: Which tool is used to execute packages without installing them globally?

A. npm B. nvm C. npx D. git

Q11: Which Node.js version manager is commonly used for switching between Node versions?

A. npm B. npx C. nvm D. yarn

Q12: How can you globally install a package using npm?

A. npm install package B. npm install -g package C. npm add package D. npm global install package

Q13: Which command starts a React app after setup?

A. npm install B. npm run build C. npm start D. npx start

Q14: What does the "scripts" section in package.json do?

A. Stores HTML files B. Defines project versions C. Contains custom npm commands like start or test D. Specifies runtime errors

Q15: What does the command `npm run build` do in a React app?

A. Starts the app in development mode B. Deletes unused code C. Bundles the app for production D. Installs dependencies

Q16: Which of these is a dev dependency in a React project?

A. React B. React-DOM C. Webpack D. npm

Q17: What is the use of `.npmrc` file?

A. To define Node version B. To manage scripts C. To configure npm settings like registry and proxy D. To style components

Q18: Which of the following is NOT an npm command?

A. npm audit B. npm start C. npm view D. npm deploy

Q19: What is the output of `npm list`?

A. Project directory structure B. List of installed Node.js versions C. Tree of installed packages and dependencies D. Build logs

Q20: What is the role of Babel in a Node.js + React setup?

A. Handles routing B. Converts modern JS/JSX to compatible JavaScript C. Creates databases D. Optimizes CSS