React Native React Native Core Components & APIs 1

Question 1

Which React Native component is the basic building block for creating UI layouts?

Accepted Answer

View

Answer

View is the fundamental container component in React Native, equivalent to a div in web development.

Question 2

What prop is used to style a React Native component inline?

Accepted Answer

style

Answer

The style prop accepts a JavaScript object or StyleSheet reference to apply styles to React Native components.

Question 3

Which component is used to display scrollable lists efficiently in React Native?

Accepted Answer

FlatList

Answer

FlatList renders items lazily and only renders visible items, making it more performant than ScrollView for large lists.

Question 4

What is the purpose of the TouchableOpacity component in React Native?

Accepted Answer

To create pressable elements with opacity feedback

Answer

TouchableOpacity wraps elements to make them pressable and reduces their opacity when pressed, providing visual feedback.

Question 5

Which React Native API is used to handle device back button presses on Android?

Accepted Answer

BackHandler

Answer

BackHandler is the React Native API that listens for hardware back button presses on Android devices.

React Native Practice Test