Why is it important to document the hardware configuration in a defect report?

To help developers reproduce the issue on the same hardware

To satisfy marketing requirements

To replace the need for screenshots

To increase the number of defects reported

A tester finds that a barcode scanner app fails to focus on codes smaller than 2 cm on a specific device. The same app works on other devices. Which additional detail is most important to include in the defect report?

The device model, OS version, and the minimum code size that fails

A music streaming app works well on a flagship device but takes 8 seconds to start on a budget device with a slower CPU and less RAM. The app loads a large JSON playlist on startup. Which optimization should the team test first to improve startup time on the budget device?

Increase the app's target API level to the latest version

Defer parsing the JSON playlist until after the main UI is rendered

Test the app on an emulator with a faster CPU to confirm the issue is hardware-related

Reduce the app's icon size to decrease the APK download time

A team is testing a puzzle game that uses the GPU for rendering. On a low-end device, the frame rate drops below 20 FPS during complex levels. The team wants to determine if the issue is GPU-bound or CPU-bound. Which test provides the clearest evidence?

Increase the game's texture quality and see if the frame rate drops further

Check the device's CPU usage during gameplay

Run the game on an emulator with a high-end GPU

Reduce the game's resolution and see if the frame rate improves

A company supports 500 Android models but can only test on 30 physical devices. The app uses the camera, GPS, and a magnetometer. The team has usage analytics showing that 80% of users are on 10 models, but those models all use the same camera sensor. The remaining 20% of users are spread across 490 models with diverse sensors. Which strategy best balances risk and coverage?

Allocate all 30 devices to the long tail because the top 10 models are already stable

Use 30 emulators instead of physical devices to cover all 500 models virtually

Test only the top 10 models because they cover 80% of users

Allocate 10 devices to the top 10 models and 20 devices to the long tail, grouped by sensor type

Certified Tester Mobile Application Testing

Domain 2Objective 1

Testing for Compatibility with Device Hardware CT-MAT Practice Questions (Page 4)

Part of the Mobile Application Test Types domain, which makes up ~16% of our current practice bank. ISTQB does not publish an official question count, but from its 60-minute exam (~25–40 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

8concepts

Questions 16–20

16foundation · easy
Why is it important to document the hardware configuration in a defect report?
Select an answer first
17application · medium
A tester finds that a barcode scanner app fails to focus on codes smaller than 2 cm on a specific device. The same app works on other devices. Which additional detail is most important to include in the defect report?
Select an answer first
18application · medium
A music streaming app works well on a flagship device but takes 8 seconds to start on a budget device with a slower CPU and less RAM. The app loads a large JSON playlist on startup. Which optimization should the team test first to improve startup time on the budget device?
Select an answer first
19application · medium
A team is testing a puzzle game that uses the GPU for rendering. On a low-end device, the frame rate drops below 20 FPS during complex levels. The team wants to determine if the issue is GPU-bound or CPU-bound. Which test provides the clearest evidence?
Select an answer first
20expert · hard
A company supports 500 Android models but can only test on 30 physical devices. The app uses the camera, GPS, and a magnetometer. The team has usage analytics showing that 80% of users are on 10 models, but those models all use the same camera sensor. The remaining 20% of users are spread across 490 models with diverse sensors. Which strategy best balances risk and coverage?
Select an answer first

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