Certified Tester Performance Testing
Domain 1Objective 6
Common Performance Efficiency Failure Modes and Their Causes CT-PT Practice Questions (Page 1)
Part of the Basic Concepts domain, which makes up ~25% of our current practice bank. ISTQB does not publish an official question count, but from its 90-minute exam (~35–60 total, ~9–15 in this domain), expect 2–3 from this objective — we provide 12 practice questions to prepare you well beyond it. (estimate)
12questions here
3free pages
3concepts
Questions 1–5
- 1
Which of the following best describes a performance efficiency failure mode where a system's response time increases disproportionately as the number of concurrent users grows?
Select an answer first - 2
Which of the following is a common root cause of performance efficiency failures?
Select an answer first - 3
Which of the following is an example of a configuration error that can cause performance failures?
Select an answer first - 4
A gaming company's leaderboard service shows intermittent 5-second delays during a load test. Monitoring shows the database has frequent deadlocks on the leaderboard table. The application uses a transaction that reads the entire leaderboard, updates a single score, and writes back the whole list. Which cause is most directly responsible for the delays?
Select an answer first - 5
A web application shows high CPU utilization and slow response times when many users access it simultaneously. The cause is traced to a shared resource that is locked for long periods, causing threads to wait. Which cause is most directly responsible for this failure mode?
Select an answer first
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