CGI MERN Stack Mid

Explain the Node.js event loop simply.

Node is single-threaded for JS but non-blocking for I/O. While waiting on Mongo/HTTP, it serves other requests. ShopNest API can handle many checkouts without one slow DB call freezing everything.

CGI rounds often probe: Government/enterprise delivery.

Themes commonly reported in public MNC interview experiences (AmbitionBox / LinkedIn / Glassdoor-style). Practice aloud; keep answers this short in the real round.

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