Certified Tester Performance Testing
Domain 2Objective 5
Key Sources of Performance Metrics CT-PT Practice Questions (Page 4)
Part of the Performance Measurement Fundamentals domain, which makes up ~28% of our current practice bank. ISTQB does not publish an official question count, but from its 90-minute exam (~35–60 total, ~10–17 in this domain), expect 2–3 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)
30questions here
6free pages
6concepts
Questions 16–20
- 16
Why is it important to correlate metrics from multiple sources during performance testing?
Select an answer first - 17
A company is testing a new online banking application. The load testing tool reports an average response time of 4 seconds, which exceeds the 2-second target. Server monitoring shows the application server CPU at 60% and the database server CPU at 80%. Network monitoring shows 10% utilization. Application logs show a high number of slow database queries. Which action would best identify the root cause of the bottleneck?
Select an answer first - 18
A performance test shows that the response time for a transaction is 5 seconds. The application server's CPU is at 70%, and the database server's CPU is at 30%. The network latency between the two servers is 50 ms. Which additional metric would best help determine if the database is contributing to the delay?
Select an answer first - 19
A server log contains entries with timestamps for each request and a status code. Which performance metric can be derived from this data?
Select an answer first - 20
A test engineer is analyzing a performance issue where a specific transaction occasionally takes 10 seconds instead of the usual 2 seconds. The load testing tool shows the average is 2.5 seconds. Which log-based approach would best help identify the cause of the intermittent slowness?
Select an answer first
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