Low-Level Design Tutorial 0/42 lessons ~6 min read Lesson 40

    Common Interview Questions

    Searchable LLD interview question bank — OOP, SOLID, UML, design patterns, parking lot, ATM, elevator, and interview strategy.

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    Focus
    14 guided sections
    Practice signal
    Concept-first lesson
    Career prep
    Interview Q&A included

    Introduction

    This bank contains 55 LLD interview questions with concise model answers. Topics include OOP, SOLID, UML, design patterns, and classic problems (parking lot, ATM, elevator, booking systems).

    How to use this bank

    • Pick a category (e.g. Parking Lot) and practice answering out loud in 2–3 minutes per question.
    • Search for keywords: SRP, composition, state diagram, Strategy, seat locking.
    • Pair with Module 7 lessons for full class designs before mock interviews.

    Interactive Q&A bank

    LLD Interview Bank

    55 questions · 11 topics · SOLID, patterns & classic problems

    Interactive

    FUN LLD Fundamentals

    HLD vs LLD, requirements, design process.

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