What is the main goal of analyzing performance test results?

Identify bottlenecks and validate against objectives

A performance test team is executing a load test for a banking application. The test plan specifies a ramp-up period of 10 minutes to reach 500 virtual users. During execution, the team notices that the response time for the login transaction is increasing sharply, and some transactions are timing out. According to the test plan, the success criteria state that the average response time for login must be under 3 seconds. What should the team do first?

Stop the test immediately and report a failure to stakeholders.

Continue the test as planned and record the results, noting the anomalies for later analysis.

Pause the test and increase the ramp-up time to give the system more time to stabilize.

Modify the test to reduce the number of virtual users to avoid timeouts.

When should retesting be performed in the performance testing lifecycle?

Only when the test environment changes

After performance improvements have been implemented

Before the initial test execution

A performance test identified that the application server's thread pool is exhausted under peak load. The development team increased the thread pool size and deployed the change. The performance test team needs to validate the improvement. Which of the following is the most appropriate approach?

Run a stress test with a higher load to ensure the thread pool can handle more than the original target.

Skip the retest and rely on the development team's code review to confirm the fix.

Run the same load test with the same workload and metrics to compare the results.

Run a different test scenario that focuses on other transactions to see if the system is stable.

A performance test identified a database query as the main bottleneck. The development team optimized the query and deployed the change. The performance test team is now planning to validate the improvement. Which of the following is the most appropriate action?

Run a different, more complex test scenario to ensure the system handles a wider range of conditions.

Run a stress test with a higher load to see if the system can handle more than the original target.

Run the same performance test scenario with the same workload and metrics to compare results.

Skip the retest and rely on the development team's unit tests to confirm the fix.

Certified Tester Performance Testing

Domain 3Objective 1

Principal Performance Testing Activities CT-PT Practice Questions (Page 1)

Part of the Performance Testing in the Software Lifecycle domain, which makes up ~19% of our current practice bank. ISTQB does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–11 in this domain), expect 2–3 from this objective — we provide 28 practice questions to prepare you well beyond it. (estimate)

28questions here

6free pages

7concepts

Questions 1–5

1foundation · easy
What is the main goal of analyzing performance test results?
Select an answer first
2application · medium
A performance test team is executing a load test for a banking application. The test plan specifies a ramp-up period of 10 minutes to reach 500 virtual users. During execution, the team notices that the response time for the login transaction is increasing sharply, and some transactions are timing out. According to the test plan, the success criteria state that the average response time for login must be under 3 seconds. What should the team do first?
Select an answer first
3foundation · easy
When should retesting be performed in the performance testing lifecycle?
Select an answer first
4application · medium
A performance test identified that the application server's thread pool is exhausted under peak load. The development team increased the thread pool size and deployed the change. The performance test team needs to validate the improvement. Which of the following is the most appropriate approach?
Select an answer first
5application · medium
A performance test identified a database query as the main bottleneck. The development team optimized the query and deployed the change. The performance test team is now planning to validate the improvement. Which of the following is the most appropriate action?
Select an answer first

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