Key Sources of Performance Metrics CT-PT Practice Questions (Page 2)

Questions 6–10

1. 6expert · hard

   A test engineer is analyzing a performance issue where the error rate increases from 1% to 10% during a load test. The load testing tool shows the increase, but the monitoring tool shows all servers are healthy. The application logs contain stack traces for a specific exception. Which log-based metric would best help determine if the exception is the primary cause of the errors?

   • AThe number of log files rotated during the test
   • BThe timestamp of the first exception in the logs
   • CThe total size of the log files
   • DThe count of the specific exception type in the logs during the same time window as the error rate increase
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   A performance test shows high response times, and the server's CPU utilization is also high. What does correlating these metrics suggest?

   • AThe database is the bottleneck
   • BThe client-side rendering is slow
   • CThe server CPU may be a bottleneck
   • DThe network is definitely the cause
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   A load testing tool is configured with 100 virtual users, each performing a login transaction. The tool reports an average response time of 3 seconds and a throughput of 30 transactions per minute. The test engineer wants to verify if the throughput is consistent with the load. Which calculation would confirm this?

   • A100 users / 3 seconds per transaction = 33.3 transactions per second
   • B100 users × 60 seconds / 3 seconds per transaction = 2000 transactions per minute
   • C100 users × 30 transactions per minute = 3000 transactions per minute
   • D30 transactions per minute / 100 users = 0.3 transactions per user per minute
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A test team is preparing to run a load test on a new API. They need to collect metrics that show the end-to-end user experience, the server's resource usage, and any errors thrown by the application. Which combination of metric sources should they use?

   • AInfrastructure monitoring tool and database logs only
   • BLoad testing tool and network packet capture only
   • CApplication logs and network monitoring tool only
   • DLoad testing tool, infrastructure monitoring tool, and application logs
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6. 10expert · hard

   A performance test on a web application shows that the response time is 7 seconds. The load testing tool reports that the network time is 100 ms, the server processing time is 1 second, and the client rendering time is 5 seconds. The infrastructure monitoring tool shows the server CPU at 30%. Which conclusion is best supported by these metrics?

   • AThe infrastructure is the primary bottleneck because the CPU is at 30%
   • BThe network is the primary bottleneck due to the 100 ms latency
   • CThe client-side rendering is the primary bottleneck, contributing the largest portion of the response time
   • DThe server is the primary bottleneck because it processes the request
   Reveal Solution Discussion Select an answer first