iSQI CTFL-PT_D Practice Exam Questions & Answers

6 Free Questions · Last reviewed: October 9, 2026 · Prepared & Reviewed by the ValidExamDumps Editorial Team

Exam Facts

iSQI CTFL-PT_D Exam Details

Key details for this exam, checked against the published exam outline

40 Practice Questions (Our Bank)
90 minutes Exam Duration
26 out of 40 points Passing Score
Exam Code
CTFL-PT_D
Full Name
ISTQB Certified Tester Foundation Level - Specialist Performance Testing
Issuing Body
ISTQB (International Software Testing Qualifications Board)
Question Format (Our Bank)
Multiple Choice
Delivery
Online proctored or at a test centre
Eligibility
ISTQB Certified Tester Foundation Level certification required
Practice Questions

Free CTFL-PT_D Practice Questions

Each question shows the correct answer and an explanation of why it is right

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Identify the correspondences between performance measures and metrics (1 -6) and the different environments (A C) in which performance evaluation is needed.

1. Alerts and warnings.

2. Concurrency of usage.

3. Operational processes.

4. Resource utilization.

5. Response time.

6. Throughput of data, transactions, and other units of work performed.

1. Operating environment.

2. Business environment.

3. Technical environment.

SELECT ONE OPTION

Correct Answer: C
Explanation

* 1A: Alerts and warnings are typically part of the operating environment to monitor and respond to issues in real-time.

* 2B: Concurrency of usage is critical in the business environment where multiple users interact with the system simultaneously.

* 3A: Operational processes are key aspects of the operating environment, ensuring the smooth running of day-to-day activities.

* 4C: Resource utilization is a technical concern, focusing on how effectively system resources are used.

* 5C: Response time is a technical metric that directly affects user experience and system efficiency.

* 6B: Throughput of data, transactions, and other units of work performed is relevant to the business environment where the volume of operations impacts overall performance.

This categorization aligns with the ISTQB framework for performance evaluation across different environments, ensuring comprehensive coverage of performance metrics.

(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

Correct 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.

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

Correct Answer: B
Explanation

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.


* ISTQB Performance Testing Syllabus

* ISTQB Glossary

Given the following list of approaches to load generation, select the load generation approach that is LEAST reproducible and accurate.

SELECT ONE OPTION

Correct Answer: A
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.


* ISTQB Performance Testing Syllabus

* ISTQB Advanced Level Test Automation Engineer Syllabus

Select the ONE option that describes the mechanism used to extract metrics associated with deadlocks and multi threading problems

SELECT ONE OPTION

Correct 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.

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

Correct Answer: 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.

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Study Guide

What the iSQI CTFL-PT_D Exam Covers

Exam domains verified against: Official iSQI CTFL-PT_D exam guide, last checked October 2026.

Domain 1: Fundamentals of Testing

This section covers the core concepts of software testing and the fundamental principles that underpin effective testing practices. It explores why testing is a crucial component of software development and tests the ability of learners to gain insight into the primary objectives of testing.

Domain 2: Testing Throughout the Software Development Lifecycle

This section covers integrating testing practices across different software development methodologies and how testing adapts to various development approaches. It ensures quality at every stage of the software lifecycle and explores how testing fits into the DevOps collaborative framework.

Domain 3: Static Testing

This section covers software quality assurance that occurs without executing code. It explores the basics of static testing techniques, including code reviews and static analysis tools that identify defects early in development.

Domain 4: Test Analysis and Design

This section covers various techniques for deriving effective test cases including black-box testing methods that focus on functionality and white-box testing that examines code internal structure. It also covers experience-based techniques for test design.

Domain 5: Managing the Test Activities

This section addresses effective test management for successful software quality assurance. It covers the essentials of test planning and techniques for estimating test effort accurately to support project delivery.

Sample questions from this domain above: Q1Q5Q6

Domain 6: Managing the Test Activities

This section addresses effective test management for successful software quality assurance. It covers the essentials of test planning and techniques for estimating test effort accurately to support project delivery.

Domain 7: Test Tools

This section focuses on testing tools and automation with a framework for classifying different types of testing tools and their applications. It covers tool selection criteria and integration into testing processes.

Sample questions from this domain above: Q2Q3Q4

FAQ

CTFL-PT_D Exam FAQ

Common questions about the exam itself

Is the CTFL-PT_D exam harder than the main Foundation Level certification?
The Foundation Level Performance Testing exam is at the same difficulty level as the core CTFL but requires deep knowledge of performance-specific concepts like load testing, stress testing, and performance metrics. You need to be comfortable with both testing fundamentals and specialized performance terminology to pass.
Do I need to pass the CTFL before attempting CTFL-PT_D?
Yes, the ISTQB Certified Tester Foundation Level certificate is a mandatory prerequisite. You must hold a valid CTFL certification before you can sit for the Foundation Level Performance Testing exam.
How long does it typically take to prepare for CTFL-PT_D?
Most candidates spend four to eight weeks preparing if they already hold the CTFL. The time varies based on your background in performance testing and your familiarity with tools like JMeter or LoadRunner.
What do I need to do on exam day for CTFL-PT_D?
You have 90 minutes to answer 40 multiple-choice questions in English, or 113 minutes if you sit the exam in your native language. You can take the exam online with proctoring or at an authorized test centre.
What score do I need to pass the CTFL-PT_D exam?
You need to score at least 26 points out of 40 to pass, which represents 65 percent of the total points available.
How long does the CTFL-PT_D certification remain valid?
The ISTQB Certified Tester Foundation Level Performance Testing certification does not expire. Once you pass, your credential remains valid indefinitely.
What job roles is the CTFL-PT_D certification designed for?
This certification is aimed at performance testers, performance test analysts, performance engineers, and anyone involved in performance engineering who wants to gain formal credentials and understanding of performance testing methodologies.
How does CTFL-PT_D relate to the advanced CT-PT certification?
The CTFL-PT_D is the Foundation Level performance testing specialist exam. The CT-PT Advanced Level certification builds on this and covers more complex performance testing scenarios, deeper technical aspects, and organizational considerations for larger-scale testing programs.
Can I retake the CTFL-PT_D exam if I fail?
Yes, you can retake the exam. Specific retake policies depend on your exam delivery provider such as Pearson VUE or Prometric, which typically require a waiting period between attempts.