React Native Professional Standards & Competencies 5

Question 1

A senior React Native developer should do which of the following when they discover a security vulnerability in the codebase?

Accepted Answer

Report it through the team's responsible disclosure process, assess impact, and coordinate a fix and release

Answer

Responsible disclosure coordinates the fix and release before public exposure, protecting users and the organization.

Question 2

Which approach best supports long-term maintainability of a React Native codebase?

Accepted Answer

Following consistent patterns, co-locating related files, and enforcing standards through linting and code review

Answer

Consistent patterns, logical file organization, and automated enforcement reduce cognitive overhead as the codebase grows.

Question 3

When performing a React Native upgrade across a major version, the most professional strategy is to:

Accepted Answer

Use the React Native Upgrade Helper, upgrade one major version at a time, and test each increment before proceeding

Answer

Incremental upgrades with the Upgrade Helper minimize the diff size and make it easier to attribute and fix issues at each step.

Question 4

A React Native developer is asked to implement a feature involving camera access. What professional step must happen before writing code?

Accepted Answer

Review platform permission requirements (iOS NSCameraUsageDescription, Android uses-permission), privacy policy implications, and request permissions at runtime with justification

Answer

Camera access requires platform-specific declarations, runtime permission requests with context, and privacy policy updates to comply with OS guidelines and regulations.

Question 5

Which principle should guide a React Native developer when choosing between a custom native module and a community library?

Accepted Answer

Prefer well-maintained community libraries to reduce maintenance burden, and write native modules only when no suitable library exists

Answer

Community libraries distribute maintenance burden; custom native modules are justified only when no maintained alternative meets requirements.

React Native Practice Test

React Native Practice Test

React Native Professional Standards & Competencies 5