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ISQI ISTQB Certified Tester Foundation Level - Specialist Performance Testing Sample Questions (Q19-Q24):

NEW QUESTION # 19
Which ONE of the following mechanisms is used to make the load test represent a load situation in a real production environment?
SELECT ONE OPTION

A. Generate load through the Application Programming Interface (API).
B. Gradually restrict system resources during the load test.
C. Configure environments with multiple points of presence.
D. Generate load through the User Interface.

Answer: D

Explanation:
Generating load through the User Interface (UI) is essential to replicate a real production environment accurately. This approach simulates real user interactions with the system, providing a more realistic assessment of how the system performs under actual usage conditions. According to ISTQB standards, using the UI to generate load helps identify performance issues that users might experience, ensuring that the test results are relevant and actionable.

NEW QUESTION # 20
Identify the activity that is NOT part of the performance test preparation.
SELECT ONE OPTION

A. Deploying the environment.
B. Setting up the load generation and monitoring tools and making sure that all the necessary information will be collected.
C. Virtualizing the servers.
D. Setting up the system under test.

Answer: C

Explanation:
Virtualizing the servers is not typically part of performance test preparation. Performance test preparation generally involves activities such as deploying the test environment, setting up the system under test, and configuring load generation and monitoring tools to ensure accurate data collection. While virtualization can be an aspect of the overall infrastructure setup, it is not a direct step in preparing for performance testing. ISTQB performance testing guidelines emphasize setting up the environment, system, and tools specifically for performance test execution.

NEW QUESTION # 21
(REFER TO BASE SCENARIO 2): When you refer to Base Scenario 2, you are referring to the description and only the description, without any modification.
Question specific constraints: (specific constraints are not part of the Base Scenario and are specific to this question).
Throughout the month of January (31 days), the company performed 3,100 departure operations from the Capital City Airport. These departure operations transported 465,000 passengers during the hours of operation, from 07:00 to 23:00.
The departing passengers (one of the most relevant operational profiles) will access the front-end of the application to check in for their flight. It is known that 30% of departing passengers reconnect after checking in to request the boarding pass to be resent or printed.
Question
How many departing passengers access the front-end only once to check in per hour?
SELECT ONE OPTION

A. 187.50 departing passengers / hour
B. 1,218.75 departing passengers / hour.
C. 625.00 departing passengers / hour.
D. 812.50 departing passengers / hour.

Answer: C

Explanation:
To calculate the number of departing passengers accessing the front-end only once to check in per hour, we follow these steps:
1. Total Departing Passengers in January:
o 465,000 passengers transported throughout January.
2. Duration of Operations in January:
o Operating hours: 07:00 to 23:00, which equals 16 hours per day.
o Total days in January: 31 days.
o Total operating hours in January: 31 days * 16 hours/day = 496 hours.
3. Passengers Per Hour:
o Total passengers: 465,000.
o Total hours of operation: 496 hours.
o Passengers per hour: 465,000 passengers / 496 hours = 937.5 passengers/hour.
4. Passengers Accessing Only Once for Check-In:
o 30% of departing passengers reconnect for a boarding pass, which means 70% access only once.
o Passengers accessing only once: 70% of 937.5 passengers/hour = 0.70 * 937.5 = 656.25 passengers/hour.
Given the available options, the closest correct value is C. 625.00 departing passengers / hour.

NEW QUESTION # 22
Which ONE of the following options represents a principle of performance testing?
SELECT ONE OPTION

A. The tests must be aligned with the defined expectations of different stakeholder groups, users In particular, system designers and operations staff
B. The tests must be reproducible. Identical results must be obtained by repeating the tests on an unchanged system.
C. The tests can only be conducted, where resources allow, on complete systems and test environments that are representative of the production system.
D. The tests must yield results that are both understandable and can be readily compared to the requirements desired by the technical team.

Answer: B

Explanation:
Reproducibility is a fundamental principle of performance testing, ensuring that identical results are obtained when tests are repeated on an unchanged system. This principle is critical for verifying the reliability and consistency of performance test outcomes, allowing testers to confidently identify and address performance issues. ISTQB standards emphasize reproducibility to ensure that performance testing provides accurate and actionable insights.

NEW QUESTION # 23
Select the ONE option that describes the mechanism used to extract metrics associated with deadlocks and multi threading problems SELECT ONE OPTION

A. Direct measurement from a dynamic performance test.
B. Analysis and elaboration of metrics from a dynamic performance test.
C. Scan server logs and compile metrics from them.
D. Direct measurement through a performance monitoring tool.

Answer: D

Explanation:
Direct measurement through a performance monitoring tool is the most effective mechanism for extracting metrics associated with deadlocks and multithreading problems. These tools can provide real-time insights into the system's performance, highlighting issues such as thread contention, deadlocks, and resource bottlenecks. ISTQB performance testing principles advocate the use of specialized monitoring tools to capture detailed performance metrics, facilitating the identification and resolution of complex multithreading issues.

NEW QUESTION # 24
......

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