Key Sources of Performance Metrics CT-PT Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A load testing tool is configured to simulate 500 concurrent users on an e-commerce site. The tool reports an average response time of 3 seconds and a throughput of 150 requests per second. The operations team notices the application server's CPU is at 90% during the test. Which additional metric from the load testing tool would best help determine if the response time is acceptable from the user's perspective?

   • AThe total number of virtual users that completed the test
   • BThe network bandwidth consumed during the test
   • CThe peak memory usage of the load generator
   • DThe 90th percentile response time
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   A performance test engineer wants to measure the time it takes for a user's browser to receive the final byte of a web page. Which source type provides this metric?

   • ANetwork-level source
   • BClient-side source
   • CDatabase-level source
   • DServer-side source
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   A load test on a database-heavy application shows that the response time is 6 seconds. The database server's CPU is at 85%, and the disk queue length is 8. The application server's CPU is at 30%. The network between the servers is healthy. Which metric would best determine if the disk I/O is the primary bottleneck or if the CPU is the limiting factor?

   • AThe application server's memory utilization
   • BThe total number of database connections
   • CThe average disk service time compared to the disk queue length
   • DThe network packet size
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   How can application logs be used to derive performance metrics?

   • ABy measuring the physical temperature of the server
   • BBy analyzing timestamps and error entries to calculate transaction times and error rates
   • CBy reading the network configuration from the log
   • DBy counting the number of lines in the log file
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   During a load test, the monitoring tool shows that the database server's disk queue length is consistently above 10, while CPU and memory utilization are normal. The application's response time is increasing. Which conclusion is best supported by these metrics?

   • AThe disk subsystem is a bottleneck, and the application is waiting on I/O operations
   • BThe database server has insufficient memory, causing excessive paging
   • CThe application server is the bottleneck due to high CPU usage
   • DThe network connection between the application and database is saturated
   Reveal Solution Discussion Select an answer first