iSQI CTFL-PT Exam Practice Test Instant Access

Question 1

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

In order to avoid cooperation among quiz participants, the answers to the multiple choice questions are listed randomly Confidence in the game's fairness requires that a registered user originate from only one quiz client device Every user must respond over the same short window of time in order to avoid external assistance and learning the official answer before responding. Only participants who respond correctly may answer the next question Any activity that appears to violate expected behavior of a rule-following participant will cause the client session to be rejected.

You are currently preparing test scripts to function as a quiz participant.

What input data type is most critical for the test script to incorporate to ensure that the concurrency objective will be properly tested?

AIn order to property test the concurrency objective, the test script must answer each trivia question with the same answer as every other virtual user

BIn order to property test the concurrency objective, the test script must provide a random password to the application's login system

CIn order to properly test the concurrency objective, the test script must present a unique user name to the application's login system

DIn order to properly test the concurrency objectives the test script must supply the system provided unique session ID with each answer provided

Answer : B

Question 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.

Before your team begins testing, the team needs to present the performance test plan to business stakeholders

Which of the following sets of plan attributes would you recommend be part of this presentation?

ADuring the actual quiz, users logon gradually but play simultaneously. The load injection of quiz responses will not ramp up. therefore nearly 5 million quiz responses will need to be generated in a 4 second time frame with no opportunity to reach steady state. Test plans have been discussed with Operations Development and Data Center representatives and we believe the tests will tax the quiz application consistent with actual use. The JMeter monitoring system has been tuned however, with 5 million service requests over 4 seconds there is concern that the services queue measurements may be off by 25%

BThere is a less then10% chance of missing a scheduled quiz session due to performance test activities, which will likely cost the company $50,000 in lost sponsor revenue and brand damage To avoid this risk, we are scheduling Operations and Development representatives to be available during test execution We will require that the RAID 5+1 LUNs associated with the database server cluster be broken at 22 30 and the RAID 5+1 LUNs restored, ensuring the offline set mirrors back to the RAID 5 set that was under test, at 03:00

CSince the client uses an asynchronous REST web services based sessions back to the QUZRAC services cluster, the load profile will consist of virtual users running programmed load scripts based in C# that will randomly select the correct answer following a normal distribution thus modeling the typical success distribution among users The strict 4 second cap on user responses will translate into think times that are randomly selected between 1/2 second and just under 4 seconds using a uniform distribution

DIf the quiz application drops more than 1% of quiz sessions, users will likely write bad reviews on app stores and other gaming sites
Performance tests will verify that system can support at least 4 95 million users Planned tests, which include the simultaneous sessions test, will cost $350,000 Since only two quizzes are scheduled a day, performance tests on the production system during the 'down' times should be representative of what users experience. There is a 10% chance that the production system will not restored in time for a quiz.

Answer : C

Question 3

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 million valid concurrent users

100%. 3.8 million valid concurrent users

Based on these results, what should you report to the stakeholders?

AThe 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.

BThese results clearly show that the system update successfully supports 99% of five million participants

CFour 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.

DIf we pick 85 out of 100 test runs as the minimum level of reliability, the system update does not reliability meet the 99% of five million participants concurrency target, However not all results are as bad as these

Answer : A

Question 4

Which of the following performance tests could be best considered to be the opposite to the endurance test when comparing the duration of the tests?

Aload test

Bscalability test

Cspike test

Dconcurrency test

Answer : B

Question 5

What is the order of architectures that introduce the least to most performance instability?

A . Mobile

B . Multi-tier System

C . Single Computer

AA,B.C

BB,C,A

CC,A,B

DC,B,A

Answer : B

Question 6

Which performance testing operational activity pattern assists In identifying system functionality that may require correction or optimization?

ABatch requests are collections of activities a SUT performs from inititaion through termination of one or more processes commonly measured for their elapsed time.

BConcurrencies are collections of activities a SUT performs from inititaion through termination of one or more processes commonly measured for their elapsed time

CStakeholder requests are collections of activities a SUT performs from inititaion through termination of one or more processes commonly measured for their elapsed time.

DTransactions are collections of activities a SUT performs from inititaion through termination of one or more processes commonly measured for their elapsed time.

Answer : B

Question 7

Which of the following performance tests should we use to determine if an application meets performance expectations under typical realistic loads?

Aspike test

Bstress test

Cscalability test

Dload test

Answer : B

iSQI ISTQB Certified Tester Foundation Level - Performance Testing CTFL-PT Exam Practice Test