React Native Cheat Sheet 2026

The 30 highest-yield React Native facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which hook from Redux Toolkit allows a component to read from the Redux store? → useSelector
2. How has digital technology transformed React Native practice? → It has enhanced data collection, analysis, communication, and operational efficiency
3. Which of the following is the correct flux concept data flow sequence? → Action->Dispatcher->Store->View
4. What role does active listening play in React Native practice? → It ensures accurate understanding, demonstrates respect, and improves outcomes
5. What does the Pressable component offer over TouchableOpacity? → More granular press state handling with ripple effects
6. Which React Native API is used to handle device back button presses on Android? → BackHandler
7. How do React Native professionals evaluate research quality? → By assessing methodology, sample size, peer review status, and relevance to practice
8. Which React hook is used to manage local component state in React Native? → useState
9. In react, keys are assigned to a list of elements. These are the keys: → Unique among the siblings only
10. Choose the result of typing "npm init" at the command prompt. → Initializes a package.json file
11. What is the primary value of case study analysis in React Native training? → Developing critical thinking by applying theory to realistic professional scenarios
12. How do React Native professionals transfer knowledge from training to practice? → Through supervised practice, mentoring, gradual independence, and ongoing feedback
13. How can you pass parameters to a screen when navigating in React Navigation? → navigation.navigate('Screen', { key: value })
14. Which method on FlatList helps improve performance by specifying item dimensions? → getItemLayout
15. Which method resets the navigation stack and navigates to a new screen? → navigation.reset
16. What is the implementation of the Navigator component in React Native? → JavaScript
17. What causes unnecessary re-renders in React Native components? → Passing new object or function references as props on every render
18. How do you specify a percentage-based width in React Native? → width: '50%'
19. Which API in React Native is used to show native alert dialogs? → Alert
20. What is the purpose of SafeAreaView in React Native? → To render content within the device's safe area boundaries
21. Which method is used to create optimized, validated style objects in React Native? → StyleSheet.create()
22. What is the purpose of the Tab Navigator in React Navigation? → To create bottom or top tab-based navigation
23. What is the purpose of the useFocusEffect hook in React Navigation? → To run effects when a screen gains or loses focus
24. How do React Native professionals establish measurable quality objectives? → By defining specific, measurable, achievable, relevant, and time-bound quality targets
25. How should React Native professionals apply research findings to practice? → Critically evaluate applicability, adapt to context, and monitor outcomes
26. What is the value of written documentation in React Native professional communication? → It creates permanent records, ensures clarity, and provides legal protection
27. Who was the author of the JSL when it was first written? → Jordan Walke
28. Which method replaces the current screen without adding to the navigation stack? → navigation.replace
29. What is the most effective communication approach for React Native professionals? → Adapting communication style to the audience while maintaining accuracy and clarity
30. What is the default flex direction in React Native? → column