Share Latest Jun-2026 CT-UT DUMP with 40 Questions and Answers
PDF Dumps 2026 Exam Questions with Practice Test
ISTQB CT-UT Exam Syllabus Topics:
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NEW QUESTION # 19
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 won't buy or use the software product because it lacks effectiveness, efficiency or satisfaction
- B. Users buy the software product but repeatedly need to call support because they don't understand how to use it
- C. Increased liability through risk to financial loss caused by a poorly designed or deceptive user interface
- D. Users resist using a software product which is essential for their daily work because it lacks usability
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 # 20
Which of the following statements about usability testing is true?
- A. The conditions under which a usability test is done are irrelevant
- B. The preparation of a usability test is optional
- C. Before the usability test sessions, a pilot usability test session can be conducted
- D. A usability test consists of one usability test session
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 # 21
Which of the following is a principal task of the usability test moderator role?
- A. Define testing tasks
- B. Log usability problems
- C. Write a usability test plan
- 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 # 22
Which of the following statements about usability test scripts is wrong?
- A. It is a checklist used by the moderator of a usability test.
- B. It contains pre-session interview questions.
- C. It contains answers to the test questions.
- D. It contains post-session interview questions.
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 # 23
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 # 24
As an expert for usability, you're in charge of the usability part of the development of a business application for a large customer. You have worked as a usability expert with the development team for two years and are operating well together; the developers value your feedback and give their bests implementing your suggestions. The product is in an early stage, so there's only a rudimentary prototype available.
Given this information, what is the best approach to verify the usability at the current stage?
- A. Usability test in the lab
- B. Usability maturity assessment
- C. Usability review
- D. Unmoderated usability test
Answer: C
Explanation:
At an early development stage where only a rudimentary prototype exists, a usability review (e.g., expert or heuristic review) is the most effective method. It allows usability specialists to identify potential usability issues without the need for a fully functioning product. Reviews can provide immediate, actionable feedback to guide design improvements before moving into more resource-intensive usability testing. An unmoderated usability test (B) or lab test (D) may be impractical at this stage due to limited interactivity. A usability maturity assessment (C) evaluates organizational processes and is not applicable to evaluating a specific prototype.
References:
Nielsen Norman Group: When to Use Heuristic Evaluation
ISO 9241-210:2019 - Human-Centered Design Processes
Usability.gov: Usability Evaluation Types
NEW QUESTION # 25
You are asked to evaluate the usability of a software application for a law firm. Due to time and budget constraints, it is not possible to include users in the evaluation process.
Which of the following is a valid approach for evaluating the usability in this case?
- A. User surveys
- B. Usability testing
- C. Usability Review
- D. Accessibility Evaluation
Answer: C
Explanation:
When actual users cannot be included, a usability review (often an expert or heuristic evaluation) is the most practical method. Trained evaluators examine the interface against usability principles and standards to identify potential issues. Surveys require user input, and usability testing cannot proceed without users.
Accessibility evaluation targets inclusivity for users with impairments, which is related but not a substitute for overall usability evaluation. Therefore, option A is the only valid method under these constraints.
References:
Nielsen Norman Group: Heuristic Evaluation
Usability.gov: Expert Reviews and Inspections
ISO 9241-110 - Usability Principles
NEW QUESTION # 26
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 focus on improvement, formative evaluations assess the outcome
- C. Summative evaluations assess the outcome, formative evaluations focus on improvement
- D. Summative evaluations mostly rely on user tests, formative evaluations require experts
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 # 27
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. Functional requirements
- C. Statutory Code of Practice
- D. Usability standards
Answer: D
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 # 28
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 & ii are true, iii is false
- B. i is true, ii & iii are false
- C. i, ii and iii are true
- D. ii & iii are true, i is false
Answer: C
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 # 29
Which of the following is the best description for a usability test session?
- A. A test activity specified by the moderator that needs to be accomplished by a usability test participant within a given period of time.
- B. A period of time in which a usability test participant is executing tests, moderated by a moderator and observed by a number of observers.
- C. A black-box test technique in which test cases are designed to execute usability scenarios.
- D. A document specifying a sequence of actions for the execution of a usability test.
Answer: B
Explanation:
A usability test session is a controlled period during which a test participant performs tasks using the system under test while being observed by a moderator and sometimes additional stakeholders or observers. The goal is to understand how users interact with the interface and identify usability problems. Option A describes an individual task, not the whole session. Option C refers to a test plan or test script, and Option D describes a test technique rather than a usability session. Thus, option B provides the most accurate and comprehensive definition.
References:
ISO 25062:2006 - Common Industry Format (CIF)
Nielsen Norman Group: Usability Testing 101
Usability.gov: Usability Test Sessions
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NEW QUESTION # 30
The usability team has written a usability test report. The report has the following structure:
Executive summary (1 page)
Table of contents (1 page)
Findings and recommendations (5 pages)
Objectives (2 pages)
Purpose (2 pages)
Contacts (1 page)
Which best practice does this usability test report violate?
- A. The report is too long
- B. The report misses positive findings
- C. The report makes use of usability jargon
- D. The report misses a description of the evaluation method
Answer: D
Explanation:
A best practice in usability reporting (based on ISO/IEC 25062:2006 - Common Industry Format for usability test reports) is to include a clear description of the evaluation method used. This includes how the test was designed, how participants were selected, what tasks were performed, and under what conditions the test was conducted. This ensures the results are credible and reproducible. The provided structure omits this essential information. While the report length is not excessive and positive findings may or may not be present, the key missing component is the method description.
References:
ISO/IEC 25062:2006 - Common Industry Format for Usability Test Reports
Nielsen Norman Group: How to Write Usability Reports
Usability.gov: Reporting Usability Test Results
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NEW QUESTION # 31
You're defining usability test tasks for a web shop for mobile phones and smartphones. Finding out whether users are able to place an order easily has been identified as the main goal of the usability test.
Which of the following is a reasonable task definition to include in the test?
- A. Put the first phone you find in your shopping cart!
- B. Your phone broke and you're looking for a new smartphone. Your budget is 200$ and it should have an infrared sensor as you like to operate your home entertainment system with it. Find a suited smartphone and order it!
- C. Enter the item number "1469483" in the search box and click "OK". Put the first item in the cart by clicking "add to bag". Then, click on "checkout" in order to start the order process. After that, fill in the form and click on "submit".
- D. Which mobile operating system do you prefer?
Answer: B
Explanation:
Option B represents a realistic, goal-oriented scenario that reflects how an actual user would interact with the website. It incorporates context, user intent, constraints, and desired outcome-all characteristics of well- designed usability tasks. Option A is vague and lacks real-world motivation. Option C is too prescriptive and limits insight into user behavior, while D is a survey question, not a usability task. According to Nielsen Norman Group and ISO 25062, the best usability tasks are scenario-based, realistic, and outcome-driven- making B the correct answer.
References:
Nielsen Norman Group: Writing Effective Usability Tasks
Usability.gov: Scenario-Based Usability Tasks
ISO 25062 - Usability Test Reporting
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NEW QUESTION # 32
A "usability requirement" is:
- A. A requirement on the usability of a component or system
- B. A requirement needed to define the size of a mobile phone used in a usability test
- C. A requirement how to conduct a usability test
- D. A requirement needed for a usability tester
Answer: A
Explanation:
A usability requirement specifies how usable a product or component must be, often in terms of effectiveness, efficiency, and user satisfaction, as defined in ISO 9241-11. These requirements ensure that the product meets specific human-centered design goals, such as allowing users to complete tasks accurately and quickly.
Options A and C describe procedural or test setup elements, not actual usability requirements. Option B refers to personnel qualifications, which are not the same as usability requirements related to system behavior or performance.
References:
ISO 9241-11:2018 - Usability: Definitions and Concepts
ISO/IEC 25010:2011 - Product Quality Model (Usability as a quality characteristic) Usability.gov: Defining Usability Requirements
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NEW QUESTION # 33
What is the System Usability Scale (SUS)?
- A. A simple, ten-item attitude scale giving a global view of subjective assessments of usability.
- B. A requirement on the usability of a component of system
- C. 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.
- D. 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.
Answer: A
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 # 34
Which of the following is the highest WCAG conformance level, promising the most accessible content?
- A. Triple A (AAA)
- B. Quadruple A (AAAA)
- C. Double A (AA)
- D. Single A (A)
Answer: A
Explanation:
The Web Content Accessibility Guidelines (WCAG) define three levels of conformance for web content accessibility:
Level A (Single A) is the minimum level of compliance.
Level AA (Double A) is the standard recommended for most websites, balancing accessibility and design.
Level AAA (Triple A) is the highest and most comprehensive level of accessibility, covering the widest range of needs.
There is no such level as "Quadruple A (AAAA)," making option D invalid.
Thus, WCAG Triple A (AAA) promises the most accessible content, even though it may not always be practically achievable for all types of content.
References:
W3C: WCAG 2.1 Conformance Requirements
ISO/IEC 40500:2012 (WCAG 2.0)
W3C: How to Meet WCAG
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NEW QUESTION # 35
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