Freshers (0–2 years)

Node.js Interview Questions for Freshers

Preparing for your first Node.js interviews? This set is curated for freshers and early-career developers (0–2 years): the 47 questions that come up most for entry-level roles, each with a clear answer, example code and follow-ups.

47Questions24Beginner23Intermediate

47 Node.js questions

  1. 1Mid: Master the EventEmitter Pattern (Topic 20)Intermediate
  2. 2Mid: Master the EventEmitter Pattern (Topic 19)Intermediate
  3. 3Mid: Master the EventEmitter Pattern (Topic 18)Intermediate
  4. 4Mid: Master the EventEmitter Pattern (Topic 17)Intermediate
  5. 5Mid: Master the EventEmitter Pattern (Topic 16)Intermediate
  6. 6Mid: Master the EventEmitter Pattern (Topic 15)Intermediate
  7. 7Mid: Master the EventEmitter Pattern (Topic 14)Intermediate
  8. 8Mid: Master the EventEmitter Pattern (Topic 13)Intermediate
  9. 9Mid: Master the EventEmitter Pattern (Topic 12)Intermediate
  10. 10Mid: Master the EventEmitter Pattern (Topic 11)Intermediate
  11. 11Junior: Understanding the Node.js Buffer Class (Topic 10)Beginner
  12. 12Junior: Understanding the Node.js Buffer Class (Topic 9)Beginner
  13. 13Junior: Understanding the Node.js Buffer Class (Topic 8)Beginner
  14. 14Junior: Understanding the Node.js Buffer Class (Topic 7)Beginner
  15. 15Junior: Understanding the Node.js Buffer Class (Topic 6)Beginner
  16. 16Junior: Understanding the Node.js Buffer Class (Topic 5)Beginner
  17. 17Junior: Understanding the Node.js Buffer Class (Topic 4)Beginner
  18. 18Junior: Understanding the Node.js Buffer Class (Topic 3)Beginner
  19. 19Junior: Understanding the Node.js Buffer Class (Topic 2)Beginner
  20. 20Junior: Understanding the Node.js Buffer Class (Topic 1)Beginner
  21. 21Mid-level Question 20: Explain the Event Loop phases.Intermediate
  22. 22Mid-level Question 19: Explain the Event Loop phases.Intermediate
  23. 23Mid-level Question 18: Explain the Event Loop phases.Intermediate
  24. 24Mid-level Question 17: Explain the Event Loop phases.Intermediate
  25. 25Mid-level Question 16: Explain the Event Loop phases.Intermediate
  26. 26Mid-level Question 15: Explain the Event Loop phases.Intermediate
  27. 27Mid-level Question 14: Explain the Event Loop phases.Intermediate
  28. 28Mid-level Question 13: Explain the Event Loop phases.Intermediate
  29. 29Mid-level Question 12: Explain the Event Loop phases.Intermediate
  30. 30Mid-level Question 11: Explain the Event Loop phases.Intermediate
  31. 31Junior Question 10: What is Node.js and why is it single-threaded?Beginner
  32. 32Junior Question 9: What is Node.js and why is it single-threaded?Beginner
  33. 33Junior Question 8: What is Node.js and why is it single-threaded?Beginner
  34. 34Junior Question 7: What is Node.js and why is it single-threaded?Beginner
  35. 35Junior Question 6: What is Node.js and why is it single-threaded?Beginner
  36. 36Junior Question 5: What is Node.js and why is it single-threaded?Beginner
  37. 37Junior Question 4: What is Node.js and why is it single-threaded?Beginner
  38. 38Junior Question 3: What is Node.js and why is it single-threaded?Beginner
  39. 39Junior Question 2: What is Node.js and why is it single-threaded?Beginner
  40. 40Junior Question 1: What is Node.js and why is it single-threaded?Beginner
  41. 41Node.js Interview Question 5 (Free)Intermediate
  42. 42Node.js Interview Question 4 (Free)Beginner
  43. 43Node.js Interview Question 1 (Free)Beginner
  44. 44Node.js Interview Question 2 (Free)Intermediate
  45. 45Node.js Advanced Interview Question 8Intermediate
  46. 46Node.js Advanced Interview Question 7Beginner
  47. 47Node.js Advanced Interview Question 10Beginner

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Frequently asked questions

Which Node.js questions do freshers (0–2 years) get asked?

This page collects 47 Node.js interview questions aligned with freshers (0–2 years), ranging across the difficulty levels that match that experience band.

How do I prepare for a Node.js interview with my experience level?

Work through these questions in order, make sure you can explain each answer out loud, and pay attention to the real-world examples and follow-ups — interviewers at this level care as much about reasoning as the final answer.

Do the answers include code and examples?

Yes — answers include explanations, code examples where relevant, common mistakes to avoid and follow-up questions so you are ready for the full interview conversation.