[Dec 05, 2025] CT-UT Questions Truly Valid For Your ISTQB Exam! [Q17-Q38]

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[Dec 05, 2025] CT-UT Questions Truly Valid For Your ISTQB Exam!

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ISTQB CT-UT Exam Syllabus Topics:

TopicDetails
Topic 1
  • Risks in Usability, User Experience and Accessibility: This domain assesses the ability of Risk Analysts to identify and analyze common risks that can affect usability, user experience, and accessibility. It differentiates between product risks—such as users being unable to use a product effectively—and project risks, including lack of expertise or insufficient usability evaluation processes. Understanding these risks helps in planning effective usability testing and evaluation.
Topic 2
  • Usability and Accessibility Standards: This part addresses the knowledge required by Compliance Officers regarding standards and guidelines that govern usability and accessibility. It introduces ISO standards like ISO 9241-110 and ISO 9241-171, manufacturer guidelines from major platforms, and web accessibility guidelines such as WCAG. It also touches on legislation relevant to accessibility requirements, such as the UK Equality Act and the Americans with Disabilities Act.
Topic 3
  • User Surveys: This part assesses the ability of Usability Test Analysts to design and use surveys to gather user feedback on software usability. It describes how to prepare user surveys, select appropriate questionnaires, and analyze survey responses to measure user satisfaction and other quality attributes from the user’s perspective.

 

NEW QUESTION # 17
Usability reviews aim to identify potential usability problems based on certain criteria. Which of the following is a reasonable criterion for a usability review?

  • A. Opinion of the management
  • B. Usability standards
  • C. Functional requirements
  • D. Statutory Code of Practice

Answer: B

Explanation:
Usability reviews evaluate a system or interface against established usability principles or standards to identify potential issues before user testing. A recognized criterion for such reviews includes adherence to usability standards such as ISO 9241 or the Web Content Accessibility Guidelines (WCAG). These standards are derived from years of research and user-centered design principles. Options A and C do not directly relate to usability. Functional requirements (option B) refer to what the system should do, not how usable it is.
Hence, option D is correct as usability standards provide a consistent, objective basis for evaluating usability.
References:
ISO 9241-110:2020 - Interaction Principles
WCAG 2.1 - Web Content Accessibility Guidelines
Nielsen Norman Group - Heuristic Evaluation
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NEW QUESTION # 18
Which of the following is the correct distinction between formative and summative usability evaluation?

  • A. Summative evaluations mostly rely on experts, formative evaluations require users
  • B. Summative evaluations mostly rely on user tests, formative evaluations require experts
  • C. Summative evaluations assess the outcome, formative evaluations focus on improvement
  • D. Summative evaluations focus on improvement, formative evaluations assess the outcome

Answer: C

Explanation:
Formative usability evaluation is conducted during the development process to identify usability problems and improve the product iteratively. It is diagnostic and improvement-focused. Summative evaluation, on the other hand, is done after development to assess the final product's usability, measuring how well it meets defined usability goals. Therefore, the correct distinction is that formative evaluation focuses on improvement, and summative evaluation assesses the outcome. This distinction aligns with widely accepted models such as those defined by ISO 9241-210 and usability.gov.
References:
ISO 9241-210:2019 - Human-Centered Design for Interactive Systems
Usability.gov: Usability Evaluation Basics
Nielsen Norman Group: Formative vs Summative Usability Testing
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NEW QUESTION # 19
Which of the following statements about usability testing is true?

  • A. The conditions under which a usability test is done are irrelevant
  • B. A usability test consists of one usability test session
  • C. Before the usability test sessions, a pilot usability test session can be conducted
  • D. The preparation of a usability test is optional

Answer: C

Explanation:
A pilot usability test session is a critical step prior to conducting the actual usability test. Its purpose is to ensure that the test setup, task design, and moderator instructions are clear and function as expected.
According to ISO 9241-210 and the Nielsen Norman Group's best practices, pilot testing helps detect unforeseen issues and fine-tune the process. Options A and B are incorrect because testing conditions must reflect realistic scenarios, and thorough preparation is essential to gather meaningful usability data. Option D is also incorrect; a usability test typically consists of multiple sessions with different users to gather sufficient data for analysis. The pilot session ensures everything works smoothly before involving real participants.
References:
ISO 9241-210:2019, Ergonomics of human-system interaction - Human-centred design Nielsen Norman Group: Usability Testing 101 Usability.gov: Pilot Testing
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NEW QUESTION # 20
In a short conversation, a potential customer mentions that accessibility is of great importance to them. What does this mean?

  • A. They use prototyping in their development process
  • B. They also seek to address users with limitations
  • C. They focus on agile development
  • D. They focus on quantitative usability evaluations

Answer: B

Explanation:
When a customer emphasizes the importance of accessibility, it means they are concerned with ensuring that users with disabilities or limitations are not excluded from using their products or services. Accessibility is about inclusiveness-providing equal access and opportunity to all users regardless of physical or cognitive ability. Option C directly reflects this understanding. The other options (A, B, and D) are aspects of usability or development methodologies but do not relate to addressing the needs of users with disabilities, which is the core focus of accessibility.
References:
W3C: Accessibility Fundamentals
ISO 9241-171 and 210 - Accessibility and Human-Centered Design
ADA (Americans with Disabilities Act) in Digital Accessibility Contexts


NEW QUESTION # 21
During a usability test, a user suggested that a quick search box on every page would help a lot for several of the main tasks. You added this finding to the list.
What's the correct classification for these kinds of findings?

  • A. Positive finding
  • B. Functional problem
  • C. Good idea
  • D. Usability problem

Answer: C

Explanation:
In usability evaluations, a distinction is made between actual usability problems (where a user struggles to complete a task or is confused by the interface) and suggestions or ideas that users provide based on their preferences or perceived improvements. When a participant offers a new feature idea (such as a quick search box), this is classified as a "good idea" or "feature suggestion," not necessarily a usability problem. It may inform future design enhancements but does not indicate a failure in usability for existing functionality.
References:
Usability.gov: Types of Usability Findings
Nielsen Norman Group: Reporting Usability Test Results
ISO 25062:2006 - Usability Test Reports
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NEW QUESTION # 22
In the last project, the usability tests substantially exceeded the budget of the test plan. Which quality control task could have been used to avoid this?

  • A. Check that findings are communicated to the stakeholders
  • B. Check whether the usability test report conforms to the best practices
  • C. Check consumed resources regularly and compare with the estimates
  • D. Check that the usability test plan has been properly reviewed

Answer: C

Explanation:
To prevent usability testing from exceeding budget, active monitoring and control of project resources are critical. The best practice is to regularly check consumed time, costs, and effort against the original estimates, allowing timely adjustments to scope or resources. This is a classic quality control practice aligned with ISO
9001 principles and standard project management methodologies. Option A relates to test preparation, option C concerns reporting and communication, and option D applies after test execution. Only option B deals directly with budget control during the test.
References:
* ISO 9001:2015 - Quality Management Systems
* ISTQB: Usability Testing Guidelines
* Nielsen Norman Group: Budgeting for Usability Testing
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NEW QUESTION # 23
Which of the following statements about usability test scripts is wrong?

  • A. It contains post-session interview questions.
  • B. It contains pre-session interview questions.
  • C. It contains answers to the test questions.
  • D. It is a checklist used by the moderator of a usability test.

Answer: C

Explanation:
A usability test script is a structured document used by the moderator to ensure consistency across test sessions. It typically includes pre-session briefing text, pre- and post-session interview questions, and the specific usability tasks to be performed. However, it does not include answers to the test questions, as usability tests focus on observing user behavior and performance-not testing users' knowledge. Providing answers would bias results and invalidate findings. Thus, option D is incorrect and the best choice.
References:
Usability.gov: Creating a Test Script
Nielsen Norman Group: Usability Testing Tools and Documentation
ISO 25062 - Guidelines for Usability Reporting
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NEW QUESTION # 24
How can the approach for conducting user surveys be summarized best?

  • A. Write survey plan, interview users and stakeholders, select questionnaire, deploy questionnaire, analyze, communicate
  • B. Write survey plan, write schedule, select questionnaire, recruit users, remind users, communicate
  • C. Write survey plan, write schedule, select questionnaire, recruit users, analyze, communicate
  • D. Write survey plan, interview users and stakeholders, select questionnaire, recruit users, remind users, communicate

Answer: A

Explanation:
Conducting user surveys involves a structured approach that ensures data collection is effective, reliable, and meaningful. The process typically starts with writing a survey plan, which defines the objectives, scope, target population, and methodology. Next, interviewing users and stakeholders is important to gather qualitative insights, refine survey questions, and align the survey with business goals and user needs.
Selecting or designing the questionnaire follows, which includes crafting clear, unbiased questions to capture the desired data. After that, deploying the questionnaire to the recruited participants is essential; this can be done via email, online tools, or in-person, depending on the context. Once the data is collected, it must be analyzed to extract meaningful patterns, trends, and insights. Finally, communicating the findings to stakeholders completes the process by informing decision-making.
Other options miss critical steps such as deploying the questionnaire (Option C), or combine steps incorrectly (Options A and D). Importantly, the step of interviewing users and stakeholders prior to deployment ensures the survey is well-informed and targeted, enhancing the quality and relevance of data collected.
References:
Usability.gov, Surveys in User Research
Nielsen Norman Group, How to Conduct User Surveys
ISO 9241-210:2019 Ergonomics of human-system interaction - User research methodologies


NEW QUESTION # 25
Which of the following is a key activity in a usability test session?

  • A. Extract usability findings and recommendations
  • B. Test the set up and modify the test script if needed
  • C. Talk to the participant during the completion of a task
  • D. Moderate the usability test

Answer: D

Explanation:
Moderating the usability test is a core activity during the actual usability test session. The moderator guides participants through tasks, ensures the session stays on track, and avoids introducing bias. Option A (testing the setup) happens before the session, during preparation. Option C (extracting findings) occurs during analysis, after the test. Option D (talking during task execution) should be minimized unless necessary, to avoid influencing user behavior. Therefore, option B is the only correct answer aligned with best practices in usability testing.
References:
Nielsen Norman Group: Role of the Usability Test Moderator
ISO 25062:2006 - Usability Test Documentation
Usability.gov: Conducting a Usability Test
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NEW QUESTION # 26
Your last 20-pages usability test report wasn't received well by the developers; only two of the 25 usability problems have been fixed. This time, you want to stick to the best practices in order to obtain better acceptance by the development team.
What are you going to do differently this time?

  • A. Include positive findings in the report, not only usability problems
  • B. Include contact details of the test participants so that the development team can contact them in case they have questions
  • C. Make the report more detailed and longer
  • D. Add the low-priority findings you didn't include in the first report

Answer: A

Explanation:
Usability test reports are more effective when they are balanced and include not only problems but also what worked well. Including positive findings increases credibility, encourages the development team, and helps them understand what should remain unchanged. Option B violates privacy and ethical standards. Option C may dilute focus, and D could worsen the problem by making the report less accessible. Thus, the best practice supported by usability.gov and Nielsen Norman Group is to include both positive and negative findings.
References:
Usability.gov: Reporting Usability Findings
Nielsen Norman Group: Writing Usability Reports that Developers Will Read ISO 25062 - Usability Test Report Format
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NEW QUESTION # 27
Which of the following is a principal task of the usability test moderator role?

  • A. Define testing tasks
  • B. Write a usability test plan
  • C. Log usability problems
  • D. Create a survey plan

Answer: A

Explanation:
The usability test moderator plays a crucial role during the execution phase of a usability test. Their principal task is to facilitate the test sessions by guiding participants through predefined testing tasks, observing behaviors, and ensuring that the test environment is neutral and free from bias. Defining testing tasks, however, is primarily done during the test design phase by the usability test designer or analyst, but the moderator ensures these tasks are clearly communicated and administered to participants during the session.
Logging usability problems (option B) is often done by observers or analysts reviewing session recordings or notes, not directly by the moderator during live testing. Creating a survey plan (option C) and writing the usability test plan (option D) are preparatory activities generally done before the test sessions and are not the moderator's main focus. Therefore, the principal role of the moderator centers on conducting the sessions and managing task delivery effectively to obtain authentic user interaction with the system under test.
References:
Usability.gov, Usability Testing Basics
Nielsen Norman Group, Moderating Usability Tests
ISO 9241-210:2019 Ergonomics of human-system interaction - Process for usability testing


NEW QUESTION # 28
Which of the following are common mistakes made in usability testing?
i. The user is too active
ii. Critical results are ignored
iii. No observers involved
iv. Scheduling too late
v. Incorrect focus

  • A. i, ii & iii are true, iv & v are false
  • B. ii & iv are true, i, iii & v are false
  • C. ii, iv & v are true, i & iii are false
  • D. i & iii are true, ii, iv & v are false

Answer: C

Explanation:
Common mistakes in usability testing include:
Ignoring critical results (ii): A significant issue if findings are not acted upon.
Scheduling the test too late (iv): This can lead to usability problems being discovered too late to be addressed effectively.
Having the wrong focus (v): For instance, focusing on aesthetics instead of usability goals.
Option i ("user is too active") is not a problem-active participation is necessary. Option iii ("no observers involved") is not a typical mistake, since tests can still be valid even with recorded sessions and later review.
Hence, the correct answer is A: ii, iv & v are true.
References:
Nielsen Norman Group: Common Mistakes in Usability Testing
ISO 9241-210:2019 - Human-Centered Design
Usability.gov: Planning and Conducting Usability Testing
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NEW QUESTION # 29
You're conducting a user survey and you have reached the third stage, selecting an appropriate questionnaire.
You have decided to use a standardized questionnaire as you want to benchmark against previous usability measurements.
Which of the following user questionnaires allow benchmarking against previous usability measurements?
i. SUS
ii. SUMI
iii. WAMMI

  • A. i is true, ii & iii are false
  • B. i & ii are true, iii is false
  • C. ii & iii are true, i is false
  • D. i, ii and iii are true

Answer: D

Explanation:
SUS (System Usability Scale), SUMI (Software Usability Measurement Inventory), and WAMMI (Website Analysis and Measurement Inventory) are all validated, standardized usability questionnaires that support benchmarking. They allow comparison against known usability scores from a wide variety of systems. These instruments provide numeric scores that can be interpreted using benchmark datasets or industry standards.
Therefore, all three-i, ii, and iii-are true, making D the correct answer.
References:
Brooke, J. (1996). SUS - A Quick and Dirty Usability Scale
Kirakowski, J. (1994). SUMI Development
Here are the verified answers and detailed explanations for Questions 22 through 25, formatted in your specified structure:
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NEW QUESTION # 30
Which of the following elements are addressed by the WCAG?
i. Resizability of text
ii. Visually appealing design
iii. Text alternatives
iv. Keyboard accessibility
v. Mouse input

  • A. i, iii, iv & v are true, ii is false
  • B. i, ii, & iii are true, iv & v are false
  • C. i & iii are true, ii, iv & v are false
  • D. iv & v are true, i, ii & iii are false

Answer: A

Explanation:
The Web Content Accessibility Guidelines (WCAG) provide standards to ensure websites are accessible to people with disabilities. They specifically address:
i. Text resizability (SC 1.4.4),
iii. Text alternatives for non-text content (SC 1.1.1),
iv. Keyboard accessibility (SC 2.1.1),
v. Device independence, which includes not relying solely on mouse input.
Visually appealing design (ii) is not an accessibility requirement and is thus not a WCAG focus. The correct answer is D: i, iii, iv & v are true; ii is false.
References:
WCAG 2.1 Guidelines by W3C (w3.org/WAI/WCAG21)
ISO/IEC 40500:2012 - WCAG 2.0
W3C: Understanding WCAG Success Criteria
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NEW QUESTION # 31
What is the System Usability Scale (SUS)?

  • A. A requirement on the usability of a component of system
  • B. A simple, ten-item attitude scale giving a global view of subjective assessments of usability.
  • C. Testing to evaluate the degree to which the system can be used by specified users with effectiveness, efficiency and satisfaction in a specified context of use.
  • D. A usability test execution activity specified by the moderator that needs to be accomplished by a usability test participant within a given period of time.

Answer: B

Explanation:
The System Usability Scale (SUS) is a standardized, reliable tool used to measure perceived usability. It consists of 10 items with five response options (from strongly agree to strongly disagree). It is widely used due to its simplicity and effectiveness in providing a single score to reflect a user's overall satisfaction with a system. Option A refers to ISO's definition of usability testing, B describes a task in usability testing, and D refers to a usability requirement, not SUS. Therefore, the correct description of SUS is option C.
References:
Brooke, J. (1996). SUS: A Quick and Dirty Usability Scale.
Usability.gov: System Usability Scale (SUS)
ISO/IEC 25062 - Common Industry Format for Usability Test Reports
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NEW QUESTION # 32
A large customer complained that a business application developed by your company sometimes transfers the wrong amount of money to clients, although there are no complaints of the actual users. The expected amount differs from the actually transferred amount by a factor of 10 or 100. After analyzing the log files, you found out that the application itself works fine. The problem seems to be caused by confusing text fields and labels for the decimal place, leading to user errors.
Which usability risk should be reasonably addressed for the next release?

  • A. Users buy the software product but repeatedly need to call support because they don't understand how to use it
  • B. Users resist using a software product which is essential for their daily work because it lacks usability
  • C. Increased liability through risk to financial loss caused by a poorly designed or deceptive user interface
  • D. Users won't buy or use the software product because it lacks effectiveness, efficiency or satisfaction

Answer: C

Explanation:
The scenario describes a situation where the interface misleads users into making serious financial mistakes due to poor design, such as confusing decimal separators. Even though the system functions correctly, it facilitates critical user errors. This constitutes a major usability risk with potential legal and financial consequences. Therefore, the correct risk to address is increased liability due to financial loss caused by a poorly designed or deceptive interface (option D). The other options focus on usability-related dissatisfaction, resistance, or lack of adoption, which are not the key concern in this scenario.
References:
ISO 9241-210:2019 - Risk Management in Usability Engineering
Nielsen Norman Group: Error Prevention in UI Design
IEEE 1028: Standard for Software Reviews and Risk-Based Usability
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NEW QUESTION # 33
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