Siemens MERN Stack Mid

How do you handle CORS with Express and React?

Enable cors middleware on API with allowed origin of the React app. ShopNest API allows https://shopnest.example in production only.

Siemens rounds often probe: Industrial software.

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

More Siemens 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 secure a MERN API?

All MERN Stack questions

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