CTFL-PT_D Exam Preparation Material | ISTQB Certified Tester Foundation Level - Specialist Performance Testing

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Prepare for the CTFL-PT_D ISTQB Certified Tester Foundation Level - Specialist Performance Testing exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

Web.
A. 1A-2B-3B-4C-5C.
B. 1C-2C-3B-4A-5A.
C. 1A-2C-3A-4A- 5B.
D. 1A-2C-3B-4A-5C.

A. D

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.

Question#2

Inadequate database design.

A. True options: I, III, I
B. True options: II, III, I
C. True options: II, III,
D. True options: I, II, I

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.

Question#3

Choose the option that BEST describes valid opportunities for the dynamic performance testing.

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 system testing of overall end-to-end behaviors under various load conditions.
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 unit testing, including using or not profiling information to determine potential bottlenecks and white box techniques to evaluate resource utilization.

Explanation:
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.

Question#4

(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.

Explanation:
To calculate the number of departing passengers accessing the front-end only once to check in per hour, we follow these steps:

Question#5

Setting up the system under test.

A. The following are performance test activities: III, I
B. The following are performance test activities: I, II
C. I
D. The following are performance test activities:
E. V, V
F. The following are performance test activities: I, III, V

Explanation:
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.

Exam Code: CTFL-PT_D
Q & A: 44 Q&As         Updated:  Oct 17,2026

 

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What This CTFL-PT_D Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current CTFL-PT_D exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This CTFL-PT_D Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the CTFL-PT_D exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

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Exam Code: CTFL-PT_D
Q & A: 44 Q&As
Updated:  Oct 17,2026

 

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