LTTS MERN Stack Mid

How do you secure a MERN API?

HTTPS, JWT/session auth, validate input, rate limit, hash passwords (bcrypt), least-privilege DB user. ShopNest rejects unsigned tokens and sanitizes search queries.

LTTS rounds often probe: Engineering products.

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

More LTTS MERN Stack questions

What is the Virtual DOM in React?
Explain useState and useEffect with a real example.
What is middleware in Express?
Explain the Node.js event loop simply.
MongoDB vs SQL — when do you pick each?
How do you fix unnecessary React re-renders?

All MERN Stack questions

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