Q31.

What is prop drilling?

Q32.

How to prevent re-rendering in React?

Q33.

What is forwardRef?

Q34.

What is useRef hook?

Q35.

What is StrictMode in React?

Q36.

What are higher-order components (HOC)?

Q37.

What is component lifecycle?

Q38.

What are lifecycle methods in class components?

Q39.

What is error boundary?

Q40.

What is lazy loading in React?