What topics are covered in the React & System Design practice set?

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

How many questions are in the React & System Design set?

This practice set contains 50 multiple-choice questions.

How is scoring handled?

Each question has one correct answer. You will see your score and explanations after submitting.

Can I retake the practice test?

Yes, you can retake any practice set multiple times to track your improvement.

React & System Design 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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