What is Node.js?

• Programming language
• JavaScript framework
• JavaScript runtime
• Browser engine

What engine does Node.js use to execute JavaScript?

• Chakra
• SpiderMonkey
• Rhino
• V8

Which command checks the installed Node.js version?

• node --ver
• node -v
• npm -v
• version node

What does npm stand for?

• Node Package Manager
• New Package Manager
• Node Project Manager
• Node Program Module

What command initializes a new Node.js project?

• npm create
• npm start
• npm init
• npm build

What is Express.js in Node.js?

• Database
• Middleware
• Web framework
• Templating engine

Which command installs Express in a Node project?

• npm install express
• npm get express
• npm create express
• install express

What method is used to define a GET route in Express?

• app.get()
• app.route()
• app.fetch()
• app.listen()

What does app.listen() do in an Express app?

• Handles GET requests
• Starts the server
• Initializes the database
• Loads middleware

What is middleware in Express?

• A route handler
• A database query
• A function that handles requests and responses
• A model file

What does JWT stand for in Node.js authentication?

• Java Web Token
• JavaScript Web Token
• JSON Web Token
• JSON Wide Token

Which module is commonly used for real-time communication in Node.js?

• Express
• Socket.io
• Axios
• Redis

What is the purpose of the cluster module in Node.js?

• Create file clusters
• Manage database connections
• Enable multi-core usage
• Split arrays

Which package is used for caching in Node.js with Redis?

• node-cache
• express-cache
• redis
• cache-manager

What does the helmet package do in a Node.js app?

• User authentication
• Protect from vulnerabilities
• File uploads
• Cookie management