React Beginner Specialist Mock Test

Q: What is this reactjs mock test?

This is a comprehensive reactjs mock test with 20 questions covering Core Concepts, Data Flow, Hooks. It simulates real technical interviews with timed conditions and provides detailed explanations.

Q: How long does the test take?

The test has a time limit of 60 minutes. You can pause and resume, but we recommend completing it in one sitting.

Q: Will I get feedback on my answers?

Yes! After each question, you receive immediate feedback with detailed explanations. At the end, you get a comprehensive report showing your strengths and areas for improvement.

Q: Is this test suitable for FAANG interview preparation?

Absolutely! Our questions are curated by FAANG interviewers and cover the exact topics and difficulty levels you'll encounter in top tech company interviews.

Question 1

What is the primary benefit of the Virtual DOM?

Answer

Faster rendering by minimizing real DOM updates

Question 2

How do you pass a piece of data from a parent to a child component?

Answer

Using props

Question 3

Which hook is used to add local state to a functional component?

Answer

useState()

Question 4

In JSX, which attribute is used instead of the standard 'class' attribute?

Answer

className

Question 5

What is the correct way to write an expression inside JSX?

Answer

{ expression }

Question 6

When using the `useEffect` hook with an empty dependency array `[]`, when does it run?

Answer

Only once, after the initial render

Question 7

What is the 'key' prop used for when rendering lists?

Answer

To uniquely identify elements for efficient updates

Question 8

How do you handle a click event in React?

Answer

onClick={handleClick}

Question 9

What does a React component return?

Answer

JSX/React elements

Question 10

Which tool is commonly used to bundle and manage dependencies in a React project?

Answer

npm or yarn

React Beginner Specialist Mock Test

Difficulty

Topics Covered

What You'll Get