Principal Performance Testing Activities CT-PT Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the purpose of retesting after performance improvements are made?

   • ATo validate that the improvements resolved the identified issues
   • BTo select different performance metrics
   • CTo replace the original test plan
   • DTo define new success criteria
   Reveal Solution Discussion Select an answer first
2. 12expert · hard

   A performance test for a financial application shows that the average response time for fund transfer is 1.5 seconds, which meets the target of 2 seconds. However, the error rate is 5% during peak load, and the CPU utilization on the application server is 95%. The team must decide whether to release the application. Which of the following is the most appropriate decision?

   • ARelease the application but monitor it closely in production.
   • BDo not release the application because the error rate and CPU utilization indicate performance issues that could impact users.
   • CRelease the application because the average response time meets the target.
   • DConduct more testing to determine if the issues are transient.
   Reveal Solution Discussion Select an answer first
4. 13expert · hard

   After a load test, the analysis team has the following data: response time for the 'add to cart' transaction is 0.8 seconds on average, but the 99th percentile is 5.2 seconds. The database server shows high I/O wait times. The team needs to identify the bottleneck. Which of the following is the most likely conclusion?

   • AThe application server is the bottleneck because response times are high.
   • BThe database server is the bottleneck because high I/O wait times are correlated with the high response times.
   • CThe network is the bottleneck because the 99th percentile is high.
   • DThe test is invalid because the average response time is low.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which activity is performed during the execution phase of performance testing?

   • AWriting the final report
   • BDefining test objectives
   • CMonitoring system resources
   • DCreating the workload model
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6. 15expert · hard

   A performance test for a new mobile banking app shows that the average response time for the balance inquiry is 1.8 seconds, which meets the target of 2 seconds. However, the 90th percentile is 3.5 seconds, and the error rate is 2% during peak load. The test team must report to the business stakeholders, who are primarily concerned about user experience. What is the most appropriate way to communicate the findings?

   • AReport that the test failed because the 90th percentile exceeds the target, and recommend immediate rollback.
   • BReport that the performance objective is met because the average response time is below the target.
   • CReport only the error rate and recommend further testing to understand the cause.
   • DReport the average response time and also highlight the 90th percentile and error rate, explaining that a portion of users may experience slower responses and errors.
   Reveal Solution Discussion Select an answer first