💻 How to Play Coding Quiz
Coding Quiz is a technical knowledge game covering topics essential for software engineering interviews and day-to-day development. Each game consists of 10 multiple-choice questions from your chosen topic: Data Structures & Algorithms, JavaScript, Python, SQL, or System Design. Select one of the four options before the timer expires. After each question, a detailed explanation is shown — even for correct answers — to deepen your understanding.
Questions range from beginner concepts (array indexing, basic SQL queries) to intermediate topics (Big-O complexity, closures, database normalisation). Your final score shows the percentage correct and a performance grade. Use “Change Topic” to switch subjects for your next round.
Topics Covered
- Data Structures & Algorithms: Arrays, linked lists, trees, sorting algorithms, time complexity (Big-O notation).
- JavaScript: Closures, prototypes, event loop, promises, ES6+ features, DOM manipulation.
- Python: List comprehensions, decorators, generators, OOP, built-in functions.
- SQL: Joins, subqueries, GROUP BY, indexing, ACID properties, normalisation.
- System Design: Load balancing, caching, CAP theorem, microservices, database sharding.
Interview Prep Tips
Technical interviews at major companies test both breadth (can you name concepts) and depth (can you explain trade-offs). Play this quiz regularly to build pattern recognition across topic areas. Read every explanation even when you answer correctly — understanding the why behind an answer prepares you to handle follow-up questions in real interviews. Aim for 80%+ accuracy across all 5 topics before your next interview.