What topics are covered in React & System Design?

Frontend architecture, React component design, state management, and practical system design scenarios for frontend interviews.

How many questions are in this interview practice set?

This set contains 50 practice questions.

Are these real interview questions?

Yes, these questions are curated based on common patterns in technical and behavioral interviews.

How can I use this for interview preparation?

Attempt the questions, review detailed explanations, and track your accuracy over time to identify weak areas.

React & System Design Practice Questions

Instructions

For each question, select the best answer from the options provided. You can view detailed explanations immediately after answering. Navigate through pages using the controls below.

Question 1

What is the virtual DOM in React?

Question 2

What is the purpose of the useEffect hook dependency array?

Question 3

In React, what is the key difference between props and state?

Question 4

You need to build a real-time collaborative document editor. Which architecture is most appropriate?

Question 5

What is the main advantage of React Server Components (RSC)?

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