Answer
Execution happens step-by-step, blocking the thread until each operation completes.
Quick Answer
Synchronous programming runs operations one at a time — each line waits for the previous to finish. Simple to reason about but inefficient for I/O: fs.readFileSync blocks the entire Node.js thread while reading, preventing it from handling other requests. Fine for scripts; avoid in web servers handling concurrent requests.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ