Node.js Interview Questions

Q1 What is Node.js and how does it work? ✓ Answered → Q2 What is the event loop in Node.js? ✓ Answered → Q3 What is non-blocking I/O? ✓ Answered → Q4 What is the difference between synchronous and asynchronous code? ✓ Answered → Q5 What are callbacks in Node.js? ✓ Answered → Q6 What is callback hell? ✓ Answered → Q7 How does Node.js handle concurrency? ✓ Answered → Q8 What is a Promise in Node.js? ✓ Answered → Q9 What is async/await? ✓ Answered → Q10 What is middleware in Express.js? ✓ Answered → Q11 What is the difference between require and import? ✓ Answered → Q12 What is CommonJS? ✓ Answered → Q13 What is ES Module in Node.js? ✓ Answered → Q14 What is package.json? ✓ Answered → Q15 What is npm? ✓ Answered → Q16 What is npx? Generate → Q17 What is the difference between dependencies and devDependencies? Generate → Q18 What is process in Node.js? Generate → Q19 What is process.nextTick()? Generate → Q20 What is the difference between setImmediate and setTimeout? Generate →