[Jun-2026] ISTQB CT-UT Dumps - Secret To Pass in First Attempt
ISTQB CT-UT Exam Dumps [2026] Practice Valid Exam Dumps Question
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NEW QUESTION # 18
Which of the following is the correct distinction between formative and summative usability evaluation?
- A. Summative evaluations focus on improvement, formative evaluations assess the outcome
- 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 mostly rely on experts, formative evaluations require users
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
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 makes use of usability jargon
- B. The report is too long
- C. The report misses positive findings
- 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 # 20
Why are positive usability findings of high importance? Which of the following statements is wrong?
- A. Positive usability findings should be used to communicate to the development team which features should not be modified or deleted.
- B. Positive usability findings allow a better view of the usability of the product.
- C. Positive usability findings make it easier to sell the need for correcting usability problems by giving a balanced view.
- D. Positive findings are of high importance because they can be used in the report to justify the costs of the test.
Answer: D
Explanation:
Positive usability findings play a key role in reinforcing what is working well in the user interface. They help:
A: Build developer confidence and soften criticism when pointing out issues.
C: Provide a complete picture of usability strengths and weaknesses.
D: Inform developers what should remain unchanged during redesign.
However, B is incorrect because justifying usability test costs should not rely solely on positive findings. Cost justification should come from the overall impact of usability on user satisfaction, performance, and business outcomes-not just good results.
References:
Nielsen Norman Group: Communicating Usability Findings
Usability.gov: Best Practices for Usability Reporting
ISO 25062 - Usability Test Report Content
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NEW QUESTION # 21
Which of the following is a principal task of the usability tester role?
- A. Perform pre-session briefing of participants
- B. Define testing tasks
- C. Discuss findings from usability test
- D. Communicate with test participant
Answer: D
Explanation:
The usability tester, often synonymous with the usability test moderator in practice, is primarily responsible for interacting directly with the test participants during the usability testing sessions. This role includes communicating with participants to guide them through test tasks, answering questions without leading responses, and ensuring the session runs smoothly. Effective communication is essential to facilitate participant comfort, elicit genuine user behaviors, and capture accurate usability data.
Performing the pre-session briefing (Option A) may be done by the usability tester but is often a shared responsibility or part of test facilitation protocols. Discussing findings (Option C) typically falls to analysts or usability experts after testing sessions are completed and data analyzed. Defining testing tasks (Option D) is usually done by test designers or analysts during test planning, not during the test execution.
Therefore, communicating with test participants during testing is a core, principal task of the usability tester role.
References:
Usability.gov, Usability Testing Basics
Nielsen Norman Group, Moderating Usability Tests
ISO 9241-210:2019 Ergonomics of human-system interaction - Usability testing roles and responsibilities
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NEW QUESTION # 22
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. 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!
- B. Put the first phone you find in your shopping cart!
- 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: A
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 # 23
Which of these basic approaches to a software development project follows all key elements of human- centered evaluation?
- A. Interview users, develop the software, and perform acceptance test
- B. Interview users, iteratively develop prototypes, and evaluate the software
- C. Iteratively develop prototypes, perform expert reviews, and integrate found issues
- D. Define requirements, develop the software, and perform acceptance test
Answer: B
Explanation:
Human-centered design, as defined by ISO 9241-210, emphasizes early user involvement, iterative design, and continuous usability evaluation. Option D aligns with this model as it begins with understanding user needs (interview users), proceeds through iterative prototyping (which allows for continuous improvement), and involves user evaluation. This ensures that the final product is shaped by real user input and feedback.
Options A and B lack iteration and continuous evaluation, while option C, although partially aligned, lacks explicit user involvement in the evaluation process, focusing only on expert reviews.
References:
ISO 9241-210:2019 - Human-Centered Design
Nielsen Norman Group: Human-Centered Design Principles
Usability.gov: Human-Centered Design Process
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NEW QUESTION # 24
A company distributes its products over a web shop where users can put items in their shopping cart. After they click on "checkout", the checkout process starts and users cannot go back anymore to correct possible mistakes. The only way is to hit the "back" button of the browser, which might lead to an expired session and therefore losing all items in the shopping cart.
Which of the following heuristics would best describe this usability issue?
- A. Aesthetic and minimalist design
- B. Visibility of system status
- C. Help and documentation
- D. User control and freedom
Answer: D
Explanation:
The described issue violates the usability heuristic "User control and freedom," as defined by Jakob Nielsen.
This principle emphasizes that users should have the ability to undo and redo actions and navigate freely without being trapped in irreversible sequences. In the scenario, users are forced into the checkout process without a clear way to return or correct mistakes, except through the unreliable and disruptive back button.
This design flaw undermines user autonomy and can result in lost progress or frustration.
References:
Nielsen Norman Group: 10 Usability Heuristics for User Interface Design ISO 9241-110:2020 - Interaction Principles
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NEW QUESTION # 25
What location is NOT suitable for conducting a usability test?
- A. A public place, such as a cafe.
- B. A room where no action of the user can be seen or recorded by any means.
- C. Two office rooms that are connected by a video link.
- D. A room at the place where the test participant lives or works.
Answer: B
Explanation:
The primary goal of usability testing is to observe and record user behavior while interacting with the system.
A location where user actions cannot be seen or recorded (option A) completely undermines the test's purpose and is therefore not suitable.
While options B, C, and D are not ideal in all cases, they can still be valid settings depending on the context.
Testing in a user's natural environment (B) increases ecological validity. Remote testing via video link (C) is widely accepted. Testing in a public setting (D) can be useful for mobile apps or services intended for real- world use.
References:
Usability.gov: Conducting Usability Testing
Nielsen Norman Group: Choosing a Usability Testing Location
NEW QUESTION # 26
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. Accessibility Evaluation
- B. User surveys
- C. Usability Review
- D. Usability testing
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 # 27
A "usability requirement" is:
- A. A requirement needed to define the size of a mobile phone used in a usability test
- B. A requirement needed for a usability tester
- C. A requirement how to conduct a usability test
- D. A requirement on the usability of a component or system
Answer: D
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 # 28
What's the difference between an informal usability review and an expert usability review?
- A. No formal usability qualifications are required for an informal usability review
- B. An informal review only requires one reviewer
- C. An expert usability review is a formal review, not an informal review
- D. Contrary to an expert review, an informal usability review is based on opinion
Answer: A
Explanation:
An informal usability review can be conducted by anyone, including stakeholders or developers, and does not require formal usability training or qualifications. It is typically subjective and based on general impressions.
In contrast, an expert usability review (also called heuristic evaluation) is conducted by a trained usability expert who applies recognized usability principles. This is what differentiates the two approaches most clearly. Options A and C are misleading; expert reviews can be informal in format, and informal reviews aren't necessarily based solely on opinion. Option D is incorrect since both informal and expert reviews can be conducted individually or in groups.
References:
Nielsen Norman Group: Heuristic Evaluation
ISO 9241-110:2020 - Interaction Principles
Usability.gov: Expert Review vs Informal Review
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NEW QUESTION # 29
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. Statutory Code of Practice
- B. Opinion of the management
- C. Functional requirements
- 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 # 30
Which of the following statements about usability testing is true?
- A. A usability test consists of one usability test session
- B. Before the usability test sessions, a pilot usability test session can be conducted
- C. The conditions under which a usability test is done are irrelevant
- D. The preparation of a usability test is optional
Answer: B
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 # 31
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. ii, iv & v are true, i & iii are false
- B. i & iii are true, ii, iv & v are false
- C. i, ii & iii are true, iv & v are false
- D. ii & iv are true, i, iii & v are false
Answer: A
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 # 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. Increased liability through risk to financial loss caused by a poorly designed or deceptive user interface
- B. Users won't buy or use the software product because it lacks effectiveness, efficiency or satisfaction
- C. Users resist using a software product which is essential for their daily work because it lacks usability
- D. Users buy the software product but repeatedly need to call support because they don't understand how to use it
Answer: A
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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