A messaging app must work reliably when a user moves from Wi-Fi to cellular data. Testers want to verify that messages sent during the transition are not lost and that the app reconnects properly. Which network testing approach is most effective?

Measure the app's data usage on Wi-Fi and cellular to compare costs.

Run a load test on the messaging server to see how many messages it can handle per second.

Use a network simulation tool to switch between Wi-Fi and cellular while sending messages, and verify delivery after the transition.

Test the app on a device with cellular data disabled to see if it works on Wi-Fi only.

A video streaming app is experiencing buffering on 3G networks but works fine on Wi-Fi. The team suspects the app's adaptive bitrate logic is not responding quickly enough to bandwidth changes. Which performance testing approach would best validate this?

Test the app on a high-end device with a fast processor to see if buffering disappears.

Run a load test on the streaming server to see how many concurrent users it can handle.

Use network simulation tools to throttle bandwidth and introduce latency, then observe how the app adjusts video quality.

Measure the app's battery consumption while streaming on 3G versus Wi-Fi.

What is the primary goal of compatibility testing for a mobile app?

To evaluate the app's ease of use

To measure the app's performance under heavy load

To check the app's security against attacks

To verify the app works correctly across different devices and OS versions

What is the purpose of interruption testing for a mobile app?

To verify the app behaves correctly when interrupted by system events like calls or notifications

To measure the app's performance under network latency

To evaluate the app's usability on different screen sizes

To check the app's compatibility with different OS versions

Certified Tester Mobile Application Testing

Domain 3Objective 1

Common Test Types Applicable for Mobile Application CT-MAT Practice Questions (Page 2)

Part of the Common Test Types and Test Process for Mobile Applications domain, which makes up ~22% of our current practice bank. ISTQB does not publish an official question count, but from its 60-minute exam (~25–40 total, ~6–9 in this domain), expect 2–2 from this objective — we provide 38 practice questions to prepare you well beyond it. (estimate)

38questions here

8free pages

10concepts

Questions 6–10

6application · medium
A messaging app must work reliably when a user moves from Wi-Fi to cellular data. Testers want to verify that messages sent during the transition are not lost and that the app reconnects properly. Which network testing approach is most effective?
Select an answer first
7application · medium
A video streaming app is experiencing buffering on 3G networks but works fine on Wi-Fi. The team suspects the app's adaptive bitrate logic is not responding quickly enough to bandwidth changes. Which performance testing approach would best validate this?
Select an answer first
8foundation · easy
What is the primary goal of compatibility testing for a mobile app?
Select an answer first
9foundation · easy
What is the purpose of interruption testing for a mobile app?
Select an answer first
10foundation · easy
Which of the following is a connectivity state that should be tested in network testing?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to CT-MAT

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by ISTQB. “CT-MAT” is a trademark of its owner, used for identification only.