Quiz for Advantages of React

Q1: What is one major advantage of using React?

A. Reusability of components B. Built-in database integration C. Automatic styling with CSS D. Support for multi-threading

Q2: How does React handle changes in the UI efficiently?

A. It modifies the entire DOM B. It skips re-rendering C. It uses the Virtual DOM D. It saves UI in cache

Q3: Which of the following improves performance in React?

A. Two-way binding B. Server-side scripts C. Virtual DOM D. Multiple CSS files

Q4: Why is component-based architecture beneficial in React?

A. It simplifies CSS management B. It enables better state routing C. It allows building complex UIs from isolated pieces D. It compiles faster

Q5: Which React feature allows cleaner code and better organization?

A. Inline scripting B. Component-based architecture C. No HTML usage D. Backend integration

Q6: How does React support SEO better than other front-end frameworks?

A. It hides page content B. It renders on the client only C. It supports server-side rendering D. It blocks crawlers

Q7: What makes debugging in React easier?

A. Global variables B. Data stored in CSS C. One-way data flow D. Direct DOM manipulation

Q8: React applications are more maintainable because:

A. They avoid component usage B. They use plain HTML C. They are modular and component-driven D. They don’t use JS

Q9: What helps React integrate well with other libraries?

A. It is a full-stack framework B. It’s built on Angular C. It focuses on the view layer only D. It forces you to use Redux

Q10: React is good for large applications because:

A. It’s written in Python B. It uses XML only C. It allows component reusability and modular development D. It ignores performance

Q11: Which concept in React ensures predictable data flow?

A. Random data sharing B. Two-way binding C. Global DOM injection D. Unidirectional data flow

Q12: How does React improve developer productivity?

A. By avoiding reusability B. By complex setup C. By offering reusable components and tools like DevTools D. By disabling debugging

Q13: Why is JSX considered an advantage in React?

A. It mixes CSS with JS B. It provides a readable syntax combining HTML and JS C. It forces usage of inline styles D. It avoids component structure

Q14: Which of the following contributes to faster React applications?

A. Page reloads on every change B. Use of inline scripts C. Selective rendering with Virtual DOM D. Full DOM replacements

Q15: How does community support benefit React?

A. It provides fewer updates B. It slows down releases C. It ensures continuous improvements and library availability D. It limits flexibility

Q16: What makes React more scalable?

A. Global styles only B. No support for modularity C. Component reusability and maintainable structure D. Less structured code

Q17: Which development principle is supported by React?

A. Monolithic code B. Spaghetti coding C. Separation of concerns using components D. Tight coupling of UI and logic

Q18: What does React’s backward compatibility mean?

A. Older versions don’t work B. React changes syntax frequently C. Updates don’t break existing features D. All apps must be rewritten on update

Q19: Which of the following allows building cross-platform apps with React?

A. React DOM B. React Native C. Angular D. Vue.js

Q20: Why is React considered flexible?

A. It limits integration B. It is opinionated C. It can integrate with various technologies and architectures D. It enforces strict rules