Mobile App Design Quality Control & Assurance 2

Question 1

Which testing approach validates that individual components of a mobile app work correctly in isolation?

Accepted Answer

Unit testing

Answer

Unit testing validates individual functions or components in isolation before they are combined with other parts.

Question 2

What is 'beta testing' in the context of mobile app QA?

Accepted Answer

Testing by a selected group of real users before public launch

Answer

Beta testing involves distributing the app to a limited group of real users to gather feedback and catch issues before the public release.

Question 3

A QA engineer notices the app crashes only on devices running Android 10 but works fine on Android 12+. What type of issue is this?

Accepted Answer

OS version compatibility bug

Answer

An OS version compatibility bug occurs when an app behaves differently or fails on specific operating system versions.

Question 4

Which metric measures the percentage of code executed during automated tests?

Accepted Answer

Test coverage

Answer

Test coverage (code coverage) measures what percentage of the codebase is exercised by the test suite.

Question 5

What does 'smoke testing' check in a mobile app?

Accepted Answer

Core functionality to ensure the build is stable enough for deeper testing

Answer

Smoke testing quickly verifies that the most critical features work, confirming the build is stable before full QA begins.

Mobile App Design Practice Test