2024年最新のCTFL-PT_Dプレミアム資料テストPDFの無料問題集お試しセット
試験合格を向けてCTFL-PT_D今すぐ弊社のPerformance Testing試験パッケージを使おう
質問 # 15
Choose the option that BEST describes valid opportunities for the dynamic performance testing.
SELECT ONE OPTION
- A. During component Integration testing, across any kind of use cases and workflows, especially when integrating different use case features or Integrating with the "backbone" structure of a workflow.
- B. During unit testing, including using or not profiling information to determine potential bottlenecks and white box techniques to evaluate resource utilization.
- C. During acceptance testing, especially for data flows and workflows across key inter-system interfaces. In system integration testing, it is not uncommon for the "user* to be another system or machine (e.g. inputs from sensor inputs and other systems).
- D. During system testing of overall end-to-end behaviors under various load conditions.
正解：D
解説：
System testing of overall end-to-end behaviors under various load conditions provides a comprehensive view of how the system performs in real-world scenarios. This type of testing captures interactions between components, identifies potential bottlenecks, and ensures that the system meets performance requirements under expected load conditions. ISTQB performance testing principles highlight the importance of end-to-end testing to validate that the system can handle the intended workloads effectively.
質問 # 16
ich ONE of the following options is a specific performance risk in mobile applications?
ONE OPTION
- A. Limited resources.
- B. Inefficient Implementation of algorithms.
- C. Network congestion.
- D. Slow data flow from sensors.
正解：A
解説：
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.
質問 # 17
(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 should make a presentation to the business stakeholders In order to explain the performance test plan.
Question
Which ONE of the following options contains information that should be included in Natalie's presentation to the business stakeholders?
SELECT ONE OPTION
- A. The cost of the spike test will be in line with the budget submitted by the cloud service provider. The test must take place in the planned timeframe and use the disassociation algorithm, that were previously agreed on.
- B. A performance test will be conducted to verify the management applications capability to support simultaneous, i.e concurrent, request peaks. The objective of this test (spike test) is to check that the system will be able to support the operations.
- C. A spike test shall be conducted in the performance test environment set up by the systems manager. Preparation includes installation from the clone of the virtual machine identified for this purpose.
- D. A spike test shall be conducted in a test environment equivalent to the production environment. Passengers shall be removed from the production environment, disassociated and imported Into the test environment.
正解：B
解説：
When preparing a presentation for business stakeholders, it is essential to focus on high-level objectives and outcomes that align with business goals. In the context of performance testing, the stakeholders are primarily concerned with ensuring that the system can handle peak loads and maintain operational integrity.
* Option A talks about the setup of the test environment and the logistics of passenger data, which is too technical for business stakeholders.
* Option B focuses on budget and timeline, which are relevant but do not directly address the performance test's purpose and objectives.
* Option C clearly states the purpose of the performance test (spike test) and its objective, which is to verify that the system can support concurrent request peaks, directly aligning with business interests.
* Option D again focuses on technical details about the test environment setup, which is not the primary concern for business stakeholders.
Therefore, Option C is the most appropriate choice as it succinctly communicates the performance test's objective and its relevance to business operations.
質問 # 18
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. 1C - 2A - 3D - 4B - 5E
- B. 1B-2E-3A-4D-5C
- C. 1C-2D-3E-4B-5A
- D. 1B-2A-3D-4C-5E
正解：B
解説：
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
質問 # 19
(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. 1,218.75 departing passengers / hour.
- B. 187.50 departing passengers / hour
- C. 812.50 departing passengers / hour.
- D. 625.00 departing passengers / hour.
正解：D
解説：
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.
質問 # 20
(REFER TO BASE SCENARIO 2): IV/rerj 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
A performance test will be carried out for which 11,700 transactions will be necessary to simulate an operation similar to that described in the base scenario and the restrictions of this question. How many virtual users will be necessary to achieve this number of transactions and the conditions of the operations?
SELECT ONE OPTION
- A. 11,700
- B. 9,000
- C. 8,500
- D. 23,400
正解：A
解説：
To determine the number of virtual users necessary for the performance test:
1. Total Transactions Needed:
o 11,700 transactions are required to simulate the operation.
2. Conditions of Operations:
o The simulation should reflect the realistic load of departing passengers accessing the front-end application.
3. Virtual Users:
o The number of virtual users required is equal to the total number of transactions to be generated in the test since each virtual user performs one transaction.
Thus, the correct answer is B. 11,700 virtual users will be necessary to achieve the specified number of transactions under the given conditions.
質問 # 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).
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, no improvement is required. The transactions associated with the check-in are below the acceptance value, no improvement is required.
- B. 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.
- C. 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.
- D. 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.
正解：B
解説：
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.
質問 # 22
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 using crowds.
- B. Load generation via the Application Programming Interface (API).
- C. Load generation via the user interface.
- D. Load generation using captured communication protocols.
正解：A
解説：
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
質問 # 23
Choose the VALID description of the ramp-up concept.
SELECT ONE OPTION
- A. Stage of reaching the stationary state.
- B. Stage of finishing the test.
- C. Stage of exit from a stationary state by increasing the number of concurrent users.
- D. Technique in which the load on the system is increased to a certain value in the shortest possible time.
正解：C
解説：
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.
Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Glossary
質問 # 24
In which activity of the testing process is the scope of performance testing established?
SELECT ONE OPTION
- A. Test planning.
- B. Test design.
- C. Test monitoring and control.
- D. Test analysis.
正解：A
解説：
The scope of performance testing is established during the test planning phase. During this phase, testers define the objectives, resources, schedule, and scope of the testing activities. This includes identifying the specific performance requirements, determining the test environment, and outlining the test strategy. According to ISTQB guidelines, effective test planning ensures that the performance testing efforts are aligned with the project goals and stakeholder expectations, setting a clear direction for subsequent testing activities.
質問 # 25
If Emily is conducting a performance test to determine that a system exposed to a load can respond to a high number of concurrent users during short periods of time that occur on specific days and at specific times, and then return to a stable state.
What type of performance testing is Emily conducting?
SELECT ONE OPTION
- A. Spike testing.
- B. Load testing.
- C. Endurance testing
- D. Concurrency testing.
正解：A
解説：
Spike testing involves subjecting a system to a significant increase in load for short periods of time to determine if it can handle sudden spikes in traffic. Emily's scenario of testing a system's response to a high number of concurrent users during specific periods and then returning to a stable state fits the description of spike testing.
Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Glossary
質問 # 26
What are the main activities of performance test execution?
1. Monitoring all parts of the environment.
2. Setting up the load generation and monitoring tools.
3. Collecting and keeping all results and information related to the test.
4. Generation of a load against the SUT according to a load profile.
5. Parameterize the test scripts.
6. Setting up the system under test.
SELECT ONE OPTION
- A. The following are performance test activities: I, III, VI.
- B. The following are performance test activities: I. V, VI.
- C. The following are performance test activities: I, III. IV.
- D. The following are performance test activities: III, IV.
正解：C
解説：
The main activities of performance test execution include:
* I. Monitoring all parts of the environment: Ensures that performance metrics are collected from various components to provide a comprehensive view of the system's performance.
* III. Collecting and keeping all results and information related to the test: Essential for analyzing the performance test outcomes and identifying areas for improvement.
* IV. Generation of a load against the SUT according to a load profile: Simulates the expected user load to assess how the system performs under typical and peak conditions.
These activities align with ISTQB guidelines, which emphasize thorough monitoring, data collection, and load generation as critical components of effective performance testing.
質問 # 27
What is the benefit of transaction nesting for performance testing?
SELECT ONE OPTION
- A. The ability to measure individual and aggregate activities.
- B. The ability to measure reflection time to better represent when a real user performs an action.
- C. The possibility to measure the time elapsed for the transaction.
- D. The possibility to measure the evolution of response time with the load.
正解：A
解説：
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.
質問 # 28
Base Scenario 1: This Base Scenario 1 is used for 2 questions throughout this exam. When you refer to Base Scenario 1, you are referring to this description and only this description, without any modification.
k given project for the development of a management software that will have a multilayer architecture will enable Its users to Install it in multiple locations, nationally and internationally - each installation can operate Independently and communicate with other instances in a selective way. Each installation shall have a high processing capacity.
Question specific constraints: (specific constraints are not part of the Base Scenario and are specific to this question).
* The project follows a sequential development life cycle model.
Question
Which is the right moment in the project to analyze and evaluate the performance risks?
SELECT ONE OPTION
- A. During the requirements activities and again before running the performance test.
- B. Repeatedly throughout the development phases (including requirements activities) and the performance test itself.
- C. During the analysis and design activities as well as, again, before each performance test cycle.
- D. After design but before coding.
正解：B
解説：
Performance risks should be analyzed and evaluated continuously throughout the development lifecycle, especially in projects with high processing capacity and independent operation across multiple locations. This ongoing evaluation helps to identify and mitigate risks early and adapt to any changes that occur during development.
Reference:
* ISTQB Performance Testing Syllabus
* ISTQB Advanced Level Test Manager Syllabus
質問 # 29
(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 per hour?
SELECT ONE OPTION
- A. 1,425.00 departing passengers / hour
- B. 1,700 00 departing passengers / hour.
- C. 812.50 departing passengers / hour.
- D. 625.00 departing passengers / hour.
正解：D
解説：
To determine how many departing passengers access the front-end per hour, including those reconnecting:
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. Including Reconnecting Passengers:
o 30% of departing passengers reconnect for a boarding pass.
o Reconnecting passengers: 30% of 937.5 passengers/hour = 0.30 * 937.5 = 281.25 passengers/hour.
o Total front-end accesses per hour: 937.5 + 281.25 = 1,218.75 passengers/hour.
Given the available options, the closest correct value is A. 1,425.00 departing passengers / hour.
質問 # 30
Identify the activity that is NOT part of the performance test preparation.
SELECT ONE OPTION
- A. Setting up the load generation and monitoring tools and making sure that all the necessary information will be collected.
- B. Setting up the system under test.
- C. Virtualizing the servers.
- D. Deploying the environment.
正解：C
解説：
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.
質問 # 31
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ISQI CTFL-PT_D（ISTQB Certified Tester Foundation Level - Specialist Performance Testing）認定試験は、パフォーマンステストに特化したソフトウェアテスターを対象に設計されています。この試験は、テスターがパフォーマンス問題を特定し、パフォーマンステストを設計・実行し、テスト結果を分析し、ソフトウェアアプリケーションのパフォーマンスを向上させるための改善策を推奨する知識とスキルを評価することに焦点を当てています。この認定試験は、パフォーマンステストにおける熟練度を証明し、この分野でのキャリアアップを目指す人にとって優れた選択肢です。
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