Analysis and Reporting CT-PT Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A tester is analyzing the results of a performance test and notices that the response time for a specific transaction is consistently high, even under low load. The tester checks the application logs and finds that the transaction involves a call to an external payment gateway. What is the most likely cause of the high response time?

   • AThe external payment gateway has a high inherent latency that is not related to the application's load.
   • BThe network between the tester and the application is slow.
   • CThe application server is overloaded, even under low load.
   • DThe test data is incorrect, causing the transaction to fail.
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2. 2application · medium

   A tester needs to present the results of a performance test to the company's board of directors, who are not technical. The test showed that the new system is 20% faster than the old system, but it requires 30% more servers to achieve this. What is the most effective way to present this trade-off?

   • AUse a simple chart showing the performance gain versus the infrastructure cost increase, and explain the business value of the faster response times.
   • BState that the new system is better because performance is the most important factor.
   • CExplain the technical details of how the new system achieves the performance gain.
   • DRecommend the new system because it is faster, without mentioning the cost increase.
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4. 3foundation · easy

   In performance test result analysis, what is the primary purpose of comparing actual results against the defined performance targets?

   • ATo identify the test environment's configuration details
   • BTo decide which performance test cases to execute next
   • CTo determine if the system meets the specified performance requirements
   • DTo calculate the total cost of the performance testing effort
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5. 4expert · hard

   A tester is analyzing results from a 30-minute soak test. The average response time is stable, but the memory usage of the application server grows linearly from 2 GB to 6 GB over the test duration. The test was stopped at 30 minutes because the schedule ended. The tester needs to determine if this is a memory leak. What is the most appropriate conclusion?

   • AThe linear growth is strong evidence of a memory leak, but the test should be extended to confirm whether memory plateaus or continues to grow.
   • BThe memory growth is normal because the application is caching data to improve performance.
   • CThe memory leak is confirmed because memory usage increased by 4 GB during the test.
   • DThe test is invalid because a soak test must run for at least 24 hours to detect a leak.
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6. 5expert · hard

   A performance test of a file-upload service shows that throughput plateaus at 120 MB/s while response times remain flat. The tester suspects a bottleneck but cannot find it in the application logs. The network team reports no drops, the storage team reports the SAN is at 30% utilization, and the app server CPU is at 15%. The tester notices that the test clients are on the same subnet as the application servers. What is the most likely cause of the plateau?

   • AThe application server's disk I/O is the bottleneck because the SAN is only at 30% utilization.
   • BThe load generators are CPU-bound and cannot generate more traffic.
   • CThe test is saturating the 1 Gbps network link between the load generators and the application servers.
   • DThe application is single-threaded and cannot process more concurrent uploads.
   Reveal Solution Discussion Select an answer first