Node.js Developer interview question
How does the Node.js event loop work?
Show practical understanding of event-loop phases, non-blocking I/O, and CPU work.
A useful answer structure
Answer from your own work.
- 01Start with a precise definition and the constraint it solves.
- 02Explain how event-loop phases, non-blocking I/O, and CPU work changes your implementation or decision.
- 03Finish with a production example, risk, or verification signal.
Do not memorise a script: use only examples you can explain honestly in follow-up questions.
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