ISQI CTFL-PT 問題集

質問 1：
Server virtualization has improved deployment speed and operating-cost efficiency for many IT applications.
Which of thefollowing architectures are verylikely to utilize server virtualization that potentially suffers from performance challenges related to common host hardware resources being burdened by virtualized servers unrelated to the application under performance test?
i Multi-tier System
ii. Mobile
iii.in Single Computer
iv.Distributed
v.Cloud-based
A. iii, iv, v true i, ii false
B. ii, iv, v true i, iii false
C. i, iv, v true ii, iii false
D. i, ii, iii true iv,iv false
正解：C

質問 2：
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. 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.
B. 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.
C. These results clearly show that the system update successfully supports 99% of five million participants
D. 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
正解：B

質問 3：
Which measurements are associated with the environments listed below?
1. Batch completion time
2. Transaction throughput
3. Data restoration duration
4.. Normal use case flow duration
A. 1B,2A,3B and 4A
B. 1B. 2B. 3C and 4B
C. 1A, 2A, 3B and 4A
D. Business Environment
C Operational Environment
E. 1A, 2B, 3C and 4B
F. Technical Environment
正解：D

質問 4：
What is normally performed within the principal performance testing activity called Test Planning and Control?
i.Determine scope of performance testing
ii.Organize test cases into performance test procedures
iii.Create the test environment
iv. Identify risks to the performance tests
v. Determine load levels, timing parameters, and transactions to be tested
A. i,ii, v true iii, iv false
B. iii, iv, v true i, ii false
C. i. ivtrue ii, iii, v false
D. iii true i, ii, iv, v false
正解：A