React Native Risk Assessment & Management 5

Question 1

Which risk is introduced by using `KeyboardAvoidingView` without testing on both iOS and Android physical devices?

Accepted Answer

The behavior prop value differs between platforms, causing overlapping or displaced UI on one platform

Answer

`behavior='padding'` works on iOS while `behavior='height'` is often needed on Android, and failure to test both leads to broken layouts.

Question 2

What threat does certificate pinning in a React Native app protect against?

Accepted Answer

Man-in-the-middle attacks that use a trusted CA-signed certificate to intercept HTTPS traffic

Answer

Certificate pinning validates the server's certificate against a hardcoded fingerprint, blocking MITM attacks even with rogue trusted CAs.

Question 3

A React Native app's crash rate spikes after a Play Store update but not on the iOS App Store. What should be assessed first?

Accepted Answer

Android-specific native module incompatibility or a new Android OS behavioral change affecting only the Android build

Answer

Platform-specific crash spikes point to Android-only native module issues, Gradle build differences, or new Android OS restrictions as the first investigation priority.

Question 4

What risk does relying solely on `try/catch` for error handling in async React Native code introduce?

Accepted Answer

Unhandled promise rejections in event handlers and callbacks silently fail without triggering the catch block

Answer

Not all async errors propagate to a try/catch — unhandled rejections in fire-and-forget promises and event callbacks require a global rejection handler.

Question 5

Which risk assessment consideration is specific to React Native apps using the New Architecture (Fabric + TurboModules)?

Accepted Answer

Third-party libraries using the legacy bridge may be incompatible and require a JSI-native rewrite

Answer

The New Architecture deprecates the asynchronous bridge; libraries using the old NativeModules API must be migrated to JSI/TurboModules to remain compatible.

React Native Practice Test

React Native Practice Test

React Native Risk Assessment & Management 5