A test team is preparing to load test a microservices-based application. They need to identify which service is the bottleneck. Which measurement collection approach is most effective for this goal?

Use distributed tracing to collect response time data for each service call in the request chain

Monitor CPU utilization on the host running the load generator

Collect only the overall response time from the API gateway

Analyze the network traffic between the load generator and the API gateway

Why is it important to validate that the load testing tool is correctly configured to measure response time?

To ensure the measurements reflect actual user-perceived performance and are not skewed by tool overhead

To ensure the test uses the correct number of virtual users

To ensure the test data is stored in the correct format

To ensure the test runs for the required duration

A test team is running a load test. The test tool is installed on the same physical server as the application under test. The test results show high response times and high CPU utilization. What is the primary threat to data accuracy in this setup?

The load generator is competing with the application for CPU resources, skewing the response time measurements

The test tool cannot measure response time on a localhost connection

The network latency between the load generator and the application is too high

The application's internal logging will be disabled

Which statement correctly defines the performance metric 'error rate'?

The percentage of CPU capacity used by the system during a test

The number of failed transactions divided by the total number of transactions attempted

The number of transactions completed per unit of time

The time taken for a transaction to complete successfully

Which tool is commonly used to collect server-side resource utilization metrics (e.g., CPU, memory) during a performance test?

A system monitoring tool (e.g., PerfMon, nmon)

Certified Tester Performance Testing

Domain 2Objective 2

Collecting Performance Measurements and Metrics CT-PT Practice Questions (Page 2)

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 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

6concepts

Questions 6–10

6application · medium
A test team is preparing to load test a microservices-based application. They need to identify which service is the bottleneck. Which measurement collection approach is most effective for this goal?
Select an answer first
7foundation · easy
Why is it important to validate that the load testing tool is correctly configured to measure response time?
Select an answer first
8application · medium
A test team is running a load test. The test tool is installed on the same physical server as the application under test. The test results show high response times and high CPU utilization. What is the primary threat to data accuracy in this setup?
Select an answer first
9foundation · easy
Which statement correctly defines the performance metric 'error rate'?
Select an answer first
10foundation · easy
Which tool is commonly used to collect server-side resource utilization metrics (e.g., CPU, memory) during a performance test?
Select an answer first

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