CTFL-PT 試験問題を無料オンラインアクセス

You have been asked to test the performance of a software and system update to a North American mobile trivia quiz game application The quiz app is available on major app stores serving English-speaking users.The number of concurrent users planned for is 5 million Winning quiz participants are promised a share of an allocated cash prize Once participants start playing, their quiz sessions must not be lost especially if all previous questions were answered correctly. The application owner wants to ensure that 99% of quiz sessions are maintained (up to 4.95 million sessions) until the last answer has been successfully recorded.
You performed 100 test runs that provided 5 million virtual concurrent users.You have measurements of participant concurrency at the last question for each test run In your analysis, you order all the concurrency test results by measured concurrency value from best to worst.You determine 85%. 90%. 95% and 100% values by selecting the 85th. 90th. 95th and 100th (last and worst) measured values by counting list positions starting from the best value going towards the worst until you reach the desired list position (ex. 85). Keep in mind, the results in lower list positions are as good or better than the results chosen for reporting.
After analyzing the results of the performance tests, you present the following results
85% 4.92 million valid concurrent users
90% 4.90 million valid concurrent users
95%: 4.0 millionvalid concurrent users
100%. 3.8 million valid concurrent users
Based on these results, what should you report to thestakeholders?

• A.If we pick 85 out of 100 test runs as the minimum level of reliability, thesystem update does not reliabilitymeet the 99% of five million participants concurrency target,However not all results are as bad as these
• B.These results clearly show that the system update successfully supports 99% of five million participants
• C.The performance tests clearly have failed to produce a realistic and compatible load.The results should confirm the test oracle in that the 99% of five million participants concurrency objective has been achieved.If the performance test plan had worked correctly, the reported values should have been 85%
  4.95, 90% 4.95, 95% 4 95 and 100% 4.95 million valid concurrent users.
• D.Four samples from the first fifteen ordered test results are presented. The system update performed much worse than what is presented here. The system update has failed to meet the 99% of five million participants concurrency objective.

Which tool is best suited for determining resource utilization of a system component under test?

• A.localization test tool
• B.management console
• C.load generator
• D.monitoring tool

How does service virtualization contribute to the performance test environment?

• A.Service virtualization allows the database to perform as if it were loaded with a data set many times larger than is actually loaded
• B.Service virtualization allows the load generators to produce more load per virtual instance.
• C.Service virtualization enables the system under test to avoid functional error conditions caused by a necessary service being unavailable at the time of the performance test.
• D.Service virtualization enables load balancers to operate in a distributed environment thereby creating a realistic emulation of a production environment when available system under test equipment is inferior to production.

Which of the following performance tests commonly results In understanding an application's ability to support future Increases of users or larger amounts of data without exceeding thecurrent performance requirement?

• A.endurance test
• B.load test
• C.scalability test
• D.concurrency test

Which metrics collecting attributes are most commonly associated with the metrics collection methods listed?
1.Scans collections of and compiles metrics based on operating system and application messages
2.Supplements reporting capabilities of another metrics collection method
3.Most likely unavailable for ongoing metricscollection after performance testing efforts have ceased
4.Collected metrics data align with the greatest precision to test activities

• A.1A, 2B, 3B and 4A
• B.1C, 2B, 3Aand4A
• C.1B. 2A, 3Aand4B
• D.Performance test tools
  B Performance monitoring tools
  C Log analysis tools
• E.1C,2A,3Band4B