Typical Results of a Performance Test CT-PT Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A performance test report is being prepared for a non-technical executive audience. The test revealed a significant bottleneck in the database, but the overall system still met its response time objectives. What is the most effective way to report this finding?

   • ALead with the positive result that objectives were met, then mention the database bottleneck as a risk for future growth.
   • BFocus exclusively on the database bottleneck to ensure it gets fixed immediately.
   • COmit the bottleneck finding because the objectives were met.
   • DPresent the raw performance data and let the executives draw their own conclusions.
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2. 2foundation · easy

   A performance test report shows that the 95th percentile response time for a login transaction is 1.8 seconds, and the performance objective is that 95% of login transactions must complete within 2 seconds. What conclusion can be drawn?

   • AThe result indicates a bottleneck in the login service.
   • BThe result is inconclusive because the average response time is not reported.
   • CThe login transaction fails the performance objective.
   • DThe login transaction meets the performance objective.
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4. 3application · medium

   A performance test shows that response times are excellent until the number of concurrent users reaches 100. At that point, response times spike and the application starts returning HTTP 500 errors. The application server's memory usage is at 80% and growing. What is the most likely cause?

   • AThe database connection pool is exhausted, causing errors.
   • BThe network is saturated, causing requests to time out.
   • CA memory leak is causing the application to run out of memory and crash.
   • DThe load generator is failing to send requests correctly.
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5. 4application · easy

   A team has just completed a performance test after deploying a new caching layer. The baseline from the previous quarter showed an average response time of 350 ms and a throughput of 1000 requests per second. The new test shows an average response time of 280 ms and a throughput of 1150 requests per second. What is the most accurate interpretation?

   • AThe caching layer improved performance compared to the baseline.
   • BThe caching layer caused a regression in performance.
   • CThe results are inconclusive because the test environment changed.
   • DThe baseline is invalid because it is from a different quarter.
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6. 5application · medium

   A financial services company runs a load test against its online loan application portal. The performance objective states that the average response time must remain below 2 seconds for 500 concurrent users. After the test, the results show an average response time of 1.8 seconds, but the 95th percentile is 4.5 seconds. Which conclusion is most appropriate?

   • AThe system meets the objective, but only for the first 95% of the test duration.
   • BThe system fails the objective because the 95th percentile exceeds the threshold.
   • CThe system meets the objective because the average is below the threshold.
   • DThe test is invalid because the 95th percentile is always higher than the average.
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