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ISQI CTFL-PT_D (ISTQB Certified Tester Foundation Level - Specialist Performance Testing) certification exam is designed to assess the knowledge and skills of testers in the field of performance testing. ISTQB Certified Tester Foundation Level - Specialist Performance Testing certification is ideal for professionals who are involved in performance testing activities such as load testing, stress testing, and scalability testing. CTFL-PT_D exam covers various topics such as performance testing basics, performance measurement and analysis, performance testing tools, and performance testing in the software development life cycle.
To take the CTFL-PT_D exam, candidates must have a basic understanding of software testing concepts and techniques, as well as practical experience in performance testing. CTFL-PT_D exam consists of 40 multiple-choice questions, and candidates have 75 minutes to complete it. The passing score for the exam is 65%. Upon passing the exam, candidates are awarded the CTFL-PT_D certification, which is recognized by employers and industry professionals worldwide. ISTQB Certified Tester Foundation Level - Specialist Performance Testing certification demonstrates that the candidate has the knowledge and skills required to perform effectively in a performance testing role and contribute to the success of software development projects.
NEW QUESTION # 22
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. Direct measurement through a performance monitoring tool.
- D. Scan server logs and compile metrics from them.
Answer: C
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 # 23
If George is testing in order to check the stability of a system for a specific period of time in an operational system context, what type of testing is MOST appropriate?
SELECT ONE OPTION
- A. Load testing.
- B. Endurance testing.
- C. Capacity testing.
- D. Spike testing.
Answer: B
Explanation:
Endurance testing, also known as soak testing, evaluates the stability and performance of a system over an extended period under a significant load. This type of testing is designed to identify issues such as memory leaks, resource depletion, and other long-term stability problems that may not be evident in shorter testing durations. According to ISTQB guidelines, endurance testing is essential for ensuring that the system can maintain performance and stability over time, especially in operational contexts.
NEW QUESTION # 24
Which elements are the MOST important parts of a performance testing environment?
1. Test scripts.
2. Software configuration.
3. Test data.
4. The type of environment (physical, cloud-based, virtualized).
5. Hardware configuration.
SELECT ONE OPTION
- A. II, V are the most important parts of the test environment.
- B. II. III. V are the most important parts of the test environment.
- C. II. IV are the most important parts of the test environment.
- D. III, V are the most important parts of the test environment.
Answer: B
Explanation:
* II. Software configuration: Ensures the software under test is set up correctly, mirroring the production environment as closely as possible.
* III. Test data: Provides the necessary inputs to simulate real-world scenarios and workloads.
* V. Hardware configuration: Ensures the physical resources are adequately represented to gauge performance metrics accurately.
These elements are crucial for creating a realistic and effective performance testing environment. According to ISTQB standards, these components ensure that the testing environment accurately reflects production conditions, which is critical for obtaining valid and reliable performance test results.
NEW QUESTION # 25
Select the option that identifies the possible causes of the degradation of a system's response over time during dynamic performance testing.
1. Disk fragmentation.
2. Network latency.
3. File repository growth.
4. Memory leaks.
5. Inadequate database design.
SELECT ONE OPTION
- A. True options: II, III, V.
- B. True options: I, II, IV.
- C. True options: II, III, IV.
- D. True options: I, III, IV.
Answer: D
Explanation:
* Disk fragmentation (I) can lead to slower data retrieval times as the disk has to work harder to read fragmented files.
* File repository growth (III) increases the amount of data that must be managed and retrieved, which can slow down response times.
* Memory leaks (IV) gradually consume available memory, leading to slower system performance as the available memory for processing tasks decreases.
Network latency (II) and inadequate database design (V) are also potential causes of performance degradation, but in this context, options I, III, and IV are the most directly related to the gradual degradation of response times over time. This understanding is supported by common performance testing practices outlined in ISTQB materials.
NEW QUESTION # 26
Identify the correspondences between the communication protocols used most frequently (listed from 1 to 5) in performance testing and the categories to which they belong to (A to C).
1.REST.
2. HTTP.
3. JDBC.
4. SOAP.
5. HTTPS.
1. Web service.
2. Database.
3. Web.
SELECT ONE OPTION
- A. 1A-2C-3A-4A- 5B.
- B. 1A-2C-3B-4A-5C.
- C. 1C - 2C - 3B - 4A - 5A.
- D. 1A-2B-3B-4C-5C.
Answer: B
Explanation:
* 1A: REST - Web service
* 2C: HTTP - Web
* 3B: JDBC - Database
* 4A: SOAP - Web service
* 5C: HTTPS - Web
This mapping accurately categorizes each protocol according to its common use in performance testing. REST and SOAP are typically used for web services, JDBC for database connectivity, and HTTP/HTTPS for web communications. Understanding these correspondences helps testers select the appropriate protocols for performance testing scenarios, as outlined in ISTQB guidelines.
NEW QUESTION # 27
Choose the MOST suitable description of the structure of a performance test script SELECT ONE OPTION
- A. The Initialization section Is the section in which everything Is prepared for the main part, the main sections are executed only once, because If It is necessary to repeat any action the whole script or part of it must be repeated and the clean-up section Is the section where the necessary steps are carried out to finish the test correctly.
- B. The clean-up section Is the section in which everything is prepared for the main part In order to comply with the preconditions, the main sections can be executed several times and the completion section is the section that takes care of recording the results In the corresponding repository.
- C. The initialization section Is the section in which everything Is prepared for the main part, the main sections can be executed several times and the finalization section is the section in charge of registering the results In the corresponding repository.
- D. The Initialization section is the section in which everything Is prepared for the main part, the main sections can be executed several times and the clean-up section is the section where the necessary steps are carried out to finish the test correctly.
Answer: D
Explanation:
A performance test script generally consists of three main sections:
* Initialization: This section sets up the preconditions and prepares the system for the main test actions. It ensures that the environment and the test are ready to execute.
* Main section: This is where the core test actions occur. These actions can be executed multiple times to simulate different loads and scenarios.
* Clean-up: This section includes steps to properly close the test, such as releasing resources, resetting states, and logging results.
This structure ensures that performance tests are conducted systematically and efficiently, as emphasized by ISTQB performance testing standards.
NEW QUESTION # 28
Given the following list of approaches to load generation, select the load generation approach that is LEAST reproducible and accurate.
SELECT ONE OPTION
- A. Load generation via the Application Programming Interface (API).
- B. Load generation using crowds.
- C. Load generation using captured communication protocols.
- D. Load generation via the user interface.
Answer: B
Explanation:
Load generation using crowds (crowdsourcing) is the least reproducible and accurate approach. This method involves using a large number of real users to generate load on the system. The variability in network conditions, user behavior, and device capabilities makes it difficult to reproduce the exact same load conditions consistently.
Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Advanced Level Test Automation Engineer Syllabus
NEW QUESTION # 29
If a performance test is testing the response time of an application to be connected through remote access, which protocol is being used?
SELECT ONE OPTION
- A. WSCL.
- B. LDAP.
- C. RTE.
- D. MMS.
Answer: C
Explanation:
RTE (Remote Terminal Emulation) protocol is used when testing the response time of an application connected through remote access. It simulates interactions with applications over a network as if they were being accessed locally, making it suitable for remote access scenarios.
Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Glossary
NEW QUESTION # 30
Which ONE of the following options is NOT an advantage of aggregating results from performance testing?
SELECT ONE OPTION
- A. Performance metrics can be reported in an understandable way.
- B. Different stakeholders can see the speed at which a specific business process Is performed end-to-end.
- C. Business and project stakeholders can see the overall status of system performance.
- D. Performance trends can be identified
Answer: C
Explanation:
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.
NEW QUESTION # 31
Choose the ONE option that describes the example of a transaction. The scenario for this question is the transfer of an amount of money from one bank account to another.
SELECT ONE OPTION
- A. Request transfer of X Monetary Units from account K to account P; increase the balance of account P by X Monetary Units. If the increase in account P has been correctly applied, then apply changes.
- B. Request transfer of X Monetary Units from account K to account P; reduce the balance of account K by X Monetary Units; Increase the balance of account P by X Monetary Units. If the reduction and Increase have been correctly applied, then apply changes.
- C. Request transfer of X Monetary Units from account K to account P; reduce the balance of account K by X Monetary Units; increase the balance of account P by X Monetary Units. If the reduction or increase has been correctly applied, then apply changes
- D. Request transfer of X Monetary Units from account K to account P; decrease the balance of account K by X Monetary Units. If the reduction in account K has been correctly applied, then apply changes.
Answer: C
Explanation:
A transaction in performance testing involves a series of actions that need to be completed to ensure data consistency and correctness. Option D captures the complete and atomic nature of a transaction by ensuring that both the reduction in account K and the increase in account P are correctly applied before committing the changes. This reflects the principles of ACID (Atomicity, Consistency, Isolation, Durability) in database transactions, which are crucial for ensuring reliability and correctness in financial operations as covered in ISTQB performance testing standards.
NEW QUESTION # 32
(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. 812.50 departing passengers / hour.
- B. 187.50 departing passengers / hour
- C. 1,218.75 departing passengers / hour.
- D. 625.00 departing passengers / hour.
Answer: D
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 # 33
Associate each type of performance test (listed from 1 to 5) with part of a description that allows its characterization and/or identification (listed from A to E).
1. Endurance testing
2. Scalability testing
3. Capacity testing
4. Stress testing
5. Concurrency testing
1. Type of testing focused on the ability of a system to meet future efficiency requirements.
2. Type of testing used to evaluate a system's ability to handle reduced availability of resources.
3. Type of testing focused on the stability of the system over a specific time frame.
4. Type of testing used to determine the number of transactions a given system will support while still meeting established performance objectives.
5. Type of testing focused on the impact of situations where specific actions occur simultaneously.
SELECT ONE OPTION
- A. 1B-2A-3D-4C-5E
- B. 1C-2D-3E-4B-5A
- C. 1B-2E-3A-4D-5C
- D. 1C - 2A - 3D - 4B - 5E
Answer: C
Explanation:
The correct associations are based on the definitions of each type of performance testing:
1. Endurance testing: Focused on the stability of the system over a specific time frame. (B)
2. Scalability testing: Focused on the ability of a system to meet future efficiency requirements. (E)
3. Capacity testing: Used to determine the number of transactions a given system will support while still meeting established performance objectives. (A)
4. Stress testing: Evaluates a system's ability to handle reduced availability of resources. (D)
5. Concurrency testing: Focused on the impact of situations where specific actions occur simultaneously. (C) Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Glossary
NEW QUESTION # 34
Identify the correspondences between architectures (from 1 to 4) and their characteristic risks (from A to D).
1. Dynamlc/cloud-based systems.
2. Client-server systems.
3. Multi-Tier systems.
4. Distributed systems.
1. Potential problems due to firewalls, packet inspection and server load balancing.
2. Critical workflows or dataflows to, from, or through unreliable or unpredictable remote servers, especially when such servers suffer periodic connection problems or intermittent periods of intense load.
3. Failures related to the correct configuration of features such as distribution, virtualization and scaling, during the Initial configuration or subsequent updates.
4. Inadequate bandwidth or capacity on any individual server.
SELECT ONE OPTION
- A. 1C-2A-3D-4B.
- B. 1C - 2B - 3D - 4A.
- C. 1D-2A-3C-4B
- D. 1A-2C-3D-4B.
Answer: A
Explanation:
The characteristic risks associated with different architectures are as follows:
1. Dynamic/cloud-based systems: Critical workflows or dataflows to, from, or through unreliable or unpredictable remote servers, especially when such servers suffer periodic connection problems or intermittent periods of intense load. (C)
2. Client-server systems: Potential problems due to firewalls, packet inspection, and server load balancing. (A)
3. Multi-Tier systems: Failures related to the correct configuration of features such as distribution, virtualization, and scaling, during the initial configuration or subsequent updates. (D)
4. Distributed systems: Inadequate bandwidth or capacity on any individual server. (B) Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Glossary
NEW QUESTION # 35
ich ONE of the following options is a specific performance risk in mobile applications?
ONE OPTION
- A. Network congestion.
- B. Limited resources.
- C. Slow data flow from sensors.
- D. Inefficient Implementation of algorithms.
Answer: B
Explanation:
Mobile applications often face performance risks due to the limited resources available on mobile devices, such as CPU, memory, battery, and network bandwidth. These constraints can significantly impact the performance of mobile applications, leading to slower response times and degraded user experiences. ISTQB performance testing guidelines emphasize considering the specific resource limitations of mobile environments to ensure comprehensive performance evaluation and optimization.
NEW QUESTION # 36
(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).
Natalie has run a performance test cycle. The following metrics have been collected:
Total virtual users: 10,000.
* Status of the simulated users.
o Total number of users for whom all transactions have been completed: 89%.
* Transaction response time, o Check-in
* Response time < 1 second: 60%
* Response time < 2 seconds: 70%
* Response time < 3 seconds: 88%
* Response time < 5 seconds: 90%
* Response time < 10 seconds: 95%
Question
Given this information, how should Natalie present the results to those involved?
SELECT ONE OPTION
- A. The percentage of completed transactions is close to the acceptance value, an improvement is required. The transactions associated with the check-in are close to the acceptance value, no Improvement is required.
- B. The percentage of completed transactions is so close to the acceptance value that no improvement is required. The transactions associated with the check-in are below the acceptance value, a minimum improvement is required.
- C. The percentage of completed transactions is close to the acceptance value, no improvement is required. The transactions associated with the check-in are below the acceptance value, no improvement is required.
- D. The percentage of completed transactions is close to the acceptance value, an improvement is required. The transactions associated with the check in are below the acceptance value, an improvement is required.
Answer: D
Explanation:
When presenting performance test results, it is vital to compare the collected metrics against the predefined acceptance criteria and highlight areas needing improvement.
* Option A incorrectly suggests that no improvement is required for completed transactions, even though the acceptance value isn't met.
* Option B rightly states that improvements are required for completed transactions but incorrectly suggests no improvement is needed for check-in transactions.
* Option C suggests no improvements are needed for either metric, which is incorrect as both are below the acceptance values.
* Option D correctly identifies that both the percentage of completed transactions and the check-in transactions are below the acceptance values and require improvement.
Therefore, Option D accurately reflects the need for improvements in both metrics to meet the acceptance criteria.
NEW QUESTION # 37
Base Scenario 2 : This Base Scenario 2 is used for 8 questions throughout this exam. When you refer to Base Scenario 2, you are referring to this description and only this description, without any modification.
Natalie works for a company that develops an online check-in management software for a major international airline.
Online check-in is available for passenger check-in from 24 to 1 hour before boarding time.
Once the registration is confirmed by the customer and the system, the information must be available to the rest of the types of users (flight managers, among others) in a maximum time of 3 seconds (it is expected that this temporal constraint is met in 90% of the transactions and that 90% of the transactions are completed at 100%).
At the beginning of the check-in window, there are peaks of 100 users per minute, for one minute.
Question
Which of the following options is a performance-related business objective that could be suitable for this project?
SELECT ONE OPTION
- A. The system must be capable of supporting peak concurrent users in excess of 6,000 users per hour for one minute, accessing check-in without performance degradation, considering that peaks must not exceed a value that exceeds the processing capacity of the system.
- B. The system must have a completion time of up to three seconds for 2,000 concurrent users for updating passenger check-in data
- C. The system must be able to support peak attendance of 1,000 users, considering that there cannot be more than two flights with overlapping schedules.
- D. The system must be able to support 200 concurrent users with a response time of one second for the issuance of the boarding pass, considering that the fleet is likely to have a very high percentage of medium size aircraft.
Answer: A
Explanation:
Given the scenario of online check-in with peak user activity, the most suitable performance-related business objective would be to ensure that the system can handle a high number of concurrent users within a short period without performance degradation. Option A directly addresses the requirement to support peak loads while maintaining system performance, which aligns with the specified peak of 100 users per minute.
Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Glossary
NEW QUESTION # 38
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
- A. The lack of business logic.
- B. The missing Initialization section.
- C. The test script has not been correlated.
- D. The length of the script.
Answer: C
NEW QUESTION # 39
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ISQI CTFL-PT_D certification exam is an excellent opportunity for software testers to enhance their skills and advance their career in performance testing. It provides a globally recognized credential that demonstrates the candidate's expertise in performance testing and helps them stay up-to-date with the latest industry trends and practices.
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