#React

What is React.memo()? Explain what problem it solves, how it works internally, and what the optional comparison function (isEqual) is used for. Also, explain the difference between React.memo() and useMemo().

Consider the following React component using useMemo. Why might useMemo not behave as expected in this example? Explain how useMemo works, what dependency arrays do, and when useMemo should or should not be used.

What are the different React performance optimization techniques you have employed in your projects? Share specific examples if possible.

Discuss state management, data fetching, and caching approaches for a frontend application.

Explain the component architecture and code-splitting strategy for a large scale application.