Persistent Systems SDE-1 Junior

Explain OOP in one minute with an example.

Bundle data + behavior. ShopNest Product has price and CalculateTax(). Encapsulation hides fields; inheritance/polymorphism let CardPayment and UpiPayment share a charge method.

Persistent Systems rounds often probe: Product engineering.

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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