Module Quiz :React Basics (Meta iOS Developer Professional Certificate) Answers 2026

Question 1

Why is React using the concept of components?

✅ It allows you to build more modular apps.
❌ It allows the browser to render your pages faster.
❌ It helps accessibility readers for people who are visually impaired.
❌ It improves the styling of your pages.

Explanation:
Components React apps ko reusable, modular aur maintainable banate hain.

Question 2

What is the absolute minimum code that a component must have to be able to show something on a screen when rendered?

❌ A named function declaration and an array of items inside of the function’s body.
✅ A named function declaration and a return statement with at least a single element with some text inside of it.
❌ A named function declaration and some variables in the function’s body.
❌ A named function declaration.

Explanation:
UI dikhane ke liye component ko return me JSX dena hi padega.

Question 3

What are the benefits of using props?

❌ Props allow developers to write custom HTML tags.
✅ Props allow parent components to pass data to children components.
❌ Props allow children components to update the values of each prop independent from their parent component.

Explanation:
Props one-way data flow follow karte hain: parent → child.

Question 4

Choose the preferred component structure.

❌ Single App component only
❌ Separate component for each small element
✅ Header, Main, Product, Footer (Product rendered 3 times in Main)

Explanation:
Yeh structure clean, reusable aur scalable hota hai.

Question 5

Which keywords can you usually find in a React component?

❌ modular, expression, prop, default
❌ function, props, export, import, contain
❌ module, function, prop, exported, default
✅ function, props, return, export, default

Question 6

What is create-react-app?

❌ Stand-alone web application
❌ Command inside a component
❌ Command to serve app
✅ An npm package used to build a boilerplate React app.

Question 7

Correct command to create a new React app named example?

❌ npm initialize react-app example
❌ node init react-app example
❌ npm install react-app example
✅ npm init react-app example

Question 8

Arrow functions & parentheses (multiple parameters)?

✅ True
❌ False

Explanation:
Multiple parameters → parentheses required.

Question 9

Can you use function calls in JSX?

✅ True
❌ False

Explanation:
JSX ke andar {functionName()} valid hota hai.

Question 10

Single parameter arrow function needs parentheses?

✅ True
❌ False

Explanation:
Single parameter me parentheses optional hote hain.

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