intermediateMultithreading & Concurrency81 of 436
Why do we need async and await? What happens when you call an asynchronous API? Difference between async programming and multithreading?
Tests whether you distinguish async (non-blocking, often single-threaded via an event loop or continuation) from multithreading (actual parallel execution), and that calling an async API returns a handle/promise immediately rather than blocking the caller.
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