Pass the ISTQB Software Testing & Quality CT-PT Questions and answers with CertsForce

One of the biggest challenges of cloud-based performance testing is the lack of control over test execution timing due to shared cloud resources. Cloud environments dynamically allocate computing power, meaning that test execution may vary due to background processes, VM migrations, or auto-scaling events.

Option B (Inability to generate load) is incorrect because cloud platforms can scale upresources to generate high loads.

Option C (Lack of behavior simulation tools) is incorrect because cloud providers offer robust testing tools.

Option D (Test execution speed being too high) is not a valid performance testing challenge.

Ifmultiple virtual users execute the same script while logged in as the same user, it can causedata conflicts, session collisions, or cache interference, leading toinconsistent performance test results.

Option A (Concurrent scripts accessing the same data)may causedata locking issues, but this is atest setup concern rather than an inconsistency issue.

Option B (Sequential scripts accessing the same data)does not typicallycause inconsistenciessince they execute in order.

Option D (Verification with management)is unrelated totechnical inconsistencies.