35 questions for “Async Patterns”

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Node.js Async Patterns 15

Information Technology

35 questions in 3 technologies

#	Question	Technology	Topic	Level
1	What is the purpose of the 'node:timers/promises' module, and how does it simplify working with delays in async code? Node.js › Async Patterns	Node.js	Async Patterns	Beginner
2	What is the difference between running async operations sequentially with multiple awaits versus concurrently with Promise.all()? Node.js › Async Patterns	Node.js	Async Patterns	Intermediate
3	How does async/await relate to Promises under the hood, and what does 'await' actually do to program execution? Node.js › Async Patterns	Node.js	Async Patterns	Intermediate
4	How do you implement a retry-with-exponential-backoff pattern for a flaky async operation in Node.js? Node.js › Async Patterns	Node.js	Async Patterns	Intermediate
5	What is an async generator, and how does 'for await...of' let you consume asynchronously produced data? Node.js › Async Patterns	Node.js	Async Patterns	Advanced
6	What is a common pitfall when using async/await inside Array.prototype.forEach(), and how do you fix it? Node.js › Async Patterns	Node.js	Async Patterns	Advanced
7	How would you implement a concurrency-limited task queue in Node.js to process many async tasks without overwhelming a downstream resource? Node.js › Async Patterns	Node.js	Async Patterns	Advanced
8	What is 'fire-and-forget' async code, and why is it generally discouraged in production Node.js applications? Node.js › Async Patterns	Node.js	Async Patterns	Advanced
9	What is a callback function in Node.js, and what is 'callback hell'? Node.js › Async Patterns	Node.js	Async Patterns	Beginner
10	What is a Promise in JavaScript, and what are its three possible states? Node.js › Async Patterns	Node.js	Async Patterns	Beginner

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