Node.js Fundamentals

See how well you know Node.js runtime and core modules.

1. What is the primary role of the Node.js event loop?

Compiling JavaScript code Handling asynchronous operations Managing database connections Rendering HTML content

2. Which of the following are core features of Node.js?

Non-blocking I/O Single-threaded architecture Multi-threaded by default Event-driven programming

3. Node.js runs in the browser environment by default.

True False

4. What does 'npm' stand for?

5. Which built-in module is used for file system operations in Node.js by default?

fs file system path

6. Which are valid ways to export a module in CommonJS (Node.js default module system)?

module.exports exports export default export const

7. The 'require' function in Node.js loads modules synchronously.

True False

8. What global object in Node.js is similar to the browser's 'window' object?

9. What does the __dirname variable return in a Node.js script?

Current working directory Absolute path of the current script's directory Absolute path of the current script file Project root directory

10. Which 'fs' module methods are asynchronous (non-blocking)?

fs.readFile fs.readFileSync fs.writeFile fs.writeFileSync

11. Node.js is built on the V8 JavaScript engine developed by Google.

True False

12. What function schedules a callback to run after a specified delay (in milliseconds)?

13. Which method starts an HTTP server listening for incoming requests?

createServer listen connect start

14. Which are global objects in Node.js?

global process window console

15. ES6 modules (import/export) are enabled by default in Node.js without configuration.

True False

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