iSQI CTFL-PT_D Exam Questions Instant Access

Question 1

Refer to Base Scenario 1: When you refer to Base Scenario 1, 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).

* The project follows an iterative and Incremental development life cycle model.

* Development approach: Agile.

Question

Which of the statement(s) below is (are) TRUE regarding how the performance test is undertaken7

1. The performance test can have a dedicated iteration in a specific way.

2. Performance testing should be performed in a cloud-based performance test environment

3. The performance test may be conducted by a specific team.

4. A performance test cycle must be performed in each iteration by the development team (Agile).

SELECT ONE OPTION

ATrue statements: IV.

BTrue statements: III, IV.

CTrue statements: II, III.

DTrue statements: I, III.

Answer : B

In an Agile, iterative, and incremental development model:

* III: The performance test may be conducted by a specific team. This is true as dedicated performance testing teams often handle complex performance testing tasks.

* IV: A performance test cycle must be performed in each iteration by the development team (Agile). This ensures that performance testing is integrated into each iteration to catch performance issues early.

Statements I and II are not necessarily true:

* I: While possible, it is not always the case that there will be a dedicated iteration for performance testing.

* II: Performance testing in a cloud-based environment is beneficial but not mandatory.

* ISTQB Performance Testing Syllabus

* ISTQB Agile Tester Extension Syllabus

Question 2

Which ONE of the following options represents a principle of performance testing?

SELECT ONE OPTION

AThe tests must be aligned with the defined expectations of different stakeholder groups, users In particular, system designers and operations staff

BThe tests can only be conducted, where resources allow, on complete systems and test environments that are representative of the production system.

CThe tests must be reproducible. Identical results must be obtained by repeating the tests on an unchanged system.

DThe tests must yield results that are both understandable and can be readily compared to the requirements desired by the technical team.

Answer : C

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.

Question 3

(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

A187.50 departing passengers / hour

B1,218.75 departing passengers / hour.

C625.00 departing passengers / hour.

D812.50 departing passengers / hour.

Answer : C

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.

Question 4

Choose the VALID description of the ramp-up concept.

SELECT ONE OPTION

AStage of reaching the stationary state.

BStage of finishing the test.

CStage of exit from a stationary state by increasing the number of concurrent users.

DTechnique in which the load on the system is increased to a certain value in the shortest possible time.

Answer : C

Ramp-up in performance testing refers to the phase where the number of virtual users is gradually increased to simulate the increase in load on the system. This is essential for determining how the system behaves under varying levels of stress. The correct description of the ramp-up concept aligns with option C, which involves increasing the number of concurrent users to simulate a transition from a steady state to a higher load scenario.

* ISTQB Performance Testing Syllabus

* ISTQB Glossary

Question 5

What is the benefit of transaction nesting for performance testing?

SELECT ONE OPTION

AThe possibility to measure the evolution of response time with the load.

BThe ability to measure individual and aggregate activities.

CThe possibility to measure the time elapsed for the transaction.

DThe ability to measure reflection time to better represent when a real user performs an action.

Answer : B

Transaction nesting allows performance testers to measure both individual activities within a transaction and the aggregate performance of the entire transaction. This is beneficial because it helps identify specific areas where performance issues may be occurring. By understanding both the granular and overall performance, testers can better pinpoint bottlenecks and optimize the system. This aligns with the ISTQB principles of comprehensive performance measurement and analysis to ensure system reliability and efficiency.

Question 6

In this question, consider that test scripts are generated from a protocol level recording. At the end of the recording, an attempt was made to execute the recorded scripts without any processing, and it was not possible to play them back.

Question

What could be the reason why it is not possible to play back the script?

SELECT ONE OPTION

AThe lack of business logic.

BThe test script has not been correlated.

CThe length of the script.

DThe missing Initialization section.

Answer : B

Correlation is a critical step in preparing performance test scripts, especially when they are generated from protocol-level recordings. It involves handling dynamic values (such as session IDs or tokens) that change with each user session or transaction. Without correlation, the script fails to handle these dynamic values correctly, leading to playback errors. According to ISTQB principles, ensuring scripts are properly correlated is essential for accurate and functional test execution.

Question 7

Which ONE of the following options is NOT an advantage of aggregating results from performance testing?

SELECT ONE OPTION

ADifferent stakeholders can see the speed at which a specific business process Is performed end-to-end.

BPerformance trends can be identified

CPerformance metrics can be reported in an understandable way.

DBusiness and project stakeholders can see the overall status of system performance.

Answer : D

Aggregating results from performance testing allows for the identification of performance trends, reporting of metrics in an understandable way, and providing stakeholders with insights into the speed of specific business processes. However, it does not necessarily provide an overall status of system performance. Instead, it focuses on detailed metrics and trends. ISTQB guidelines highlight the importance of presenting performance metrics clearly but recognize that aggregated data does not equate to a comprehensive status overview of the entire system's performance.

iSQI ISTQB Certified Tester Foundation Level - Specialist Performance Testing CTFL-PT_D Exam Questions