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JavaScript Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
medium
JavaScript
What fundamentally distinguishes a Web Worker from setTimeout or a Promise?
A
Workers are just a different syntax for the same single-thread scheduling
B
Workers run on a genuinely separate OS thread with their own event loop, in real parallel — not scheduled on the main thread at all
C
Workers are faster versions of setTimeout
D
There's no real difference; it's a naming convention
Check Answer