ReactJS Quiz PDF

ReactJS Quiz Multiple Choice: 1. What is ReactJS primarily used for? o A) Backend development o B) Building reusable UI components o C) Database management o D) Mobile app development 2. Who initially developed ReactJS? o...

ReactJS Quiz Multiple Choice: 1. What is ReactJS primarily used for? o A) Backend development o B) Building reusable UI components o C) Database management o D) Mobile app development 2. Who initially developed ReactJS? o A) Google o B) Microsoft o C) Facebook o D) Apple 3. Which of the following best describes React’s approach to UI updates? o A) Imperative o B) Declarative o C) Procedural o D) Synchronous 4. What does ReactJS use to optimize rendering performance? o A) Real DOM o B) Virtual DOM o C) Inline CSS o D) Server-side rendering 5. What is the purpose of React components? o A) To break UI into small, reusable units o B) To store large amounts of data  o C) To directly manipulate the DOM o D) To handle backend logic 6. Which of the following best describes React’s approach to UI updates? o A) React updates the actual DOM directly o B) React ignores DOM updates o C) React uses the Virtual DOM for efficient updates o D) React relies only on server-side rendering 7. What is a React Component? o A) A function that updates the backend o B) A small, reusable UI element o C) A part of the browser’s native APIs o D) A built-in JavaScript method 8. Which of the following best describes React’s approach to UI updates? o A) React updates the actual DOM directly o B) React ignores DOM updates o C) React uses the Virtual DOM for efficient updates o D) React relies only on server-side rendering