• How useEffect works in React?
• How useState works in React?
• Reconciliation in React
• Virtual DOM in React
• How useCallback works and why is it needed
• How useMemo works and why is it needed
• What are custom hooks in React
• What is React.memo and why is it needed
• React fiber and virtual DOM update process
• React performance optimization techniques
• Reasons for component re-rendering in React
• component lifecycle methods in React
• React server components (rsc)
• What is context and useContext hook in React
• component rendering order and hook calling in React
• Rules for using hooks in React
• Why is key needed in React?
• React hydration and server-side rendering (SSR)
• State management approaches in React
• What is JSX in React?
• What is React and why is it needed?
• What is batching in React?
• Concurrent rendering in React
• How useLayoutEffect works in React and how does it differ from useEffect?
• Controlled and uncontrolled components in React
• React.lazy And suspense — lazy components in React
• What is prop drilling and how to avoid it
• Forms and form handling in React
• Error boundaries in React
• Refs in React (useRef, createref, forwardref)