React-Native Mastermind Challenge

What is the purpose of the React Native Bridge?

• • To connect React components with backend APIs

• • To enable communication between JavaScript and Native threads

• • To link multiple React projects together

• To render components on web browsers

What are the three key threads in React Native architecture?

• JavaScript Thread, UI Thread, Debugging Thread

• Main Thread, Native Thread, Bridge Thread

• JavaScript Thread, Native Thread, Bridge

• JavaScript Thread, Rendering Thread, API Thread

Which of the following file extensions can React Native use for platform-specific code?

• .js, .web.js

• .native.js, .desktop.js

• .app.js, .device.js

• .ios.js, .android.js

What is the primary function of the metro bundler in React Native?

• • To manage dependencies and third-party libraries.

• • To bundle JavaScript code into a format that can be understood by the mobile app.

• • To serve as a database for storing app data.

• To compile native code for iOS and Android.

How does React Native handle platform-specific functionality, like accessing the camera or GPS?

• Using third-party JavaScript libraries exclusively.

• By writing custom native modules in Java or Swift.

• By relying on the Bridge to dynamically link APIs.

• By using only built-in React Native APIs.

What is the main limitation of StyleSheet.create() in React Native?

• Does not support dynamic styling.

• Requires global imports in every file.

• • Slows down app performance for larger applications.

• Forces inline styles for components.

What does the useState hook return?

• An object with state and setState properties.

• An array with the current state and a function to update the state.

• A function that initializes the state.

• A promise that resolves to the updated state.

How can you update state based on the previous state when using useState?

• Pass the new value directly to setState.

• Use the useEffect hook to calculate the new state.

• Manually track the previous state in a variable.

• Use a function inside setState that takes the previous state as an argument.

What command is used to create a new React Native project?

• npm create @react-native-community/cli

• @react-native-community/cli start

• npx create-react-app ProjectName

• npx @react-native-community/cli init ProjectName

Which core React Native component is used to render text on the screen?

• <Text>

• <View>

• <Label>

• <Paragraph>