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What is Node.js and how does it differ from traditional web servers like Apache or Nginx?
Explain the Event-Driven Architecture in Node.js. How does it work?
What's the difference between CommonJS and ES Modules in Node.js? How do you use each?
How does non-blocking I/O work in Node.js? Give a concrete example with file system operations.
What is the V8 engine and how does Node.js use it?
How do you manage dependencies with NPM? Explain package.json, node_modules, and lock files.
How do you create a basic HTTP server in Node.js using the core http module?
What are environment variables in Node.js and how do you use them?
What are streams in Node.js and why are they important for handling large data?
What is the process object in Node.js? What are its common uses?
What is the Path module in Node.js and how do you use it to work with file paths?
What information can you retrieve with the OS module in Node.js? Give examples.
What are Buffers in Node.js? How do they differ from arrays and strings?
How do you use native fetch in Node.js? How is it different from browser fetch?
What is Express.js and how do you build a basic REST API with it?
How do you handle JSON in Node.js? Parse, stringify, and work with JSON files.
What is async/await in Node.js? How does it differ from promises and callbacks?