[2025年11月] 合格させるCTFL-UT試験一発合格、最新のCTFL-UT PassTestの提供する試験問題
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質問 # 11
Which of the following statements about usability test plans is true?
- A. It should be very elaborate and at least 10 pages
- B. It should contain the briefing instructions
- C. It contains a schedule
- D. It contains the results of the test sessions
正解：C
解説：
A usability test plan is a foundational document created before conducting usability testing. It outlines the objectives, scope, methodology, participants, tasks, and schedule for the testing activities. One of its essential components is the schedule, which details when and how test sessions will occur to ensure proper resource allocation and time management. Including a schedule helps coordinate between test moderators, participants, observers, and stakeholders, making the testing process organized and efficient.
While briefing instructions (Option B) may be related to the usability test, they are typically documented separately or included in participant materials rather than the formal test plan itself. The test plan should be concise and focused; it need not be overly elaborate or lengthy (Option C), as clarity and usability of the plan are more important than length. The results of the test sessions (Option D) are not included in the test plan but rather compiled afterward in a test report or analysis document.
Therefore, the correct statement is that the usability test plan contains a schedule, ensuring a structured timeline for the usability testing activities.
References:
Usability.gov, Usability Testing Plan Template
Nielsen Norman Group, Usability Test Planning
ISO 9241-210:2019 Ergonomics of human-system interaction - Usability testing process
質問 # 12
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. Functional requirements
- B. Usability standards
- C. Statutory Code of Practice
- D. Opinion of the management
正解：B
解説：
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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質問 # 13
A "usability test participant" ...
- A. ... is a representative user who solves typical tasks in a usability test.
- B. ... is a person who observes a usability test.
- C. ... helps to set up the system used for the usability test.
- D. ... can be the organizer of a usability test.
正解：A
解説：
A usability test participant is a person selected to represent the target user group and asked to perform specific tasks in a usability test. Their actions, reactions, and feedback help identify usability issues and evaluate the system's effectiveness, efficiency, and user satisfaction. This role is strictly observational and does not involve organizing, observing, or setting up the test. Options A, B, and C describe other roles (e.g., technical support, observers, or moderators). Only option D accurately reflects the definition of a usability test participant.
References:
ISO 9241-210:2019 - Human-Centered Design
Usability.gov: Roles in a Usability Test
Nielsen Norman Group: Recruiting Test Participants
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質問 # 14
A web shop owner used Google Analytics to gather information about her users. She found out that most users take about five minutes to place an order. Is the usability of the website good or bad?
- A. That depends on the accessibility of the website
- B. The usability of the website is good - five minutes is a fair amount of time
- C. That depends on the context of use as users may have different expectations
- D. The usability of the website is bad - five minutes is way too long
正解：C
解説：
Usability is defined in ISO 9241-11 as the extent to which a system can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use. Without knowing the context-such as product complexity, user familiarity, device type, or purchasing habits-it is impossible to judge whether five minutes is good or bad. For complex items, five minutes may be reasonable, while for one-click purchases, it may be excessive. Thus, usability cannot be assessed solely based on one metric like time-it must be evaluated within its full usage context.
References:
ISO 9241-11:2018 - Usability Definitions and Concepts
Nielsen Norman Group: Context of Use in Usability Testing
Usability.gov: Usability and Context of Use
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質問 # 15
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. ii & iii are true, i is false
- C. i is true, ii & iii are false
- D. i, ii and iii are true
正解：D
解説：
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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質問 # 16
Which of the following is the correct distinction between formative and summative usability evaluation?
- A. Summative evaluations assess the outcome, formative evaluations focus on improvement
- B. Summative evaluations mostly rely on user tests, formative evaluations require experts
- C. Summative evaluations mostly rely on experts, formative evaluations require users
- D. Summative evaluations focus on improvement, formative evaluations assess the outcome
正解：A
解説：
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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質問 # 17
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. iv & v are true, i, ii & iii are false
- B. i & iii are true, ii, iv & v are false
- C. i, ii, & iii are true, iv & v are false
- D. i, iii, iv & v are true, ii is false
正解：D
解説：
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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質問 # 18
What's the difference between an informal usability review and an expert usability review?
- A. Contrary to an expert review, an informal usability review is based on opinion
- B. An informal review only requires one reviewer
- C. No formal usability qualifications are required for an informal usability review
- D. An expert usability review is a formal review, not an informal review
正解：C
解説：
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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質問 # 19
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. Unmoderated usability test
- B. Usability test in the lab
- C. Usability review
- D. Usability maturity assessment
正解：C
解説：
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
質問 # 20
Which of the following statements best describe Rapid Iterative Testing and Evaluation?
- A. Testing is quantitative
- B. Testing is informal and many potential users can be accessed
- C. Testing focuses on instant redesigns and confirming made changes
- D. Testing happens on a regular basis, e.g. each Monday
正解：C
解説：
Rapid Iterative Testing and Evaluation (RITE) is a usability method in which usability issues are identified and addressed in short cycles. Unlike traditional usability testing, RITE allows for immediate redesigns and retesting of the improved version within the same study. The goal is to refine the design quickly based on observed usability issues. Option A confuses scheduling with methodology, B is too vague, and D inaccurately characterizes RITE as quantitative, while it is typically qualitative. Therefore, C accurately reflects the purpose and approach of RITE.
References:
* Medlock et al. (2002). The RITE Method: A Rapid Iterative Testing and Evaluation Method
* Nielsen Norman Group: Rapid Iterative Testing
* Usability.gov: RITE Method Overview
質問 # 21
Which of the following is a principal task of the usability tester role?
- A. Define testing tasks
- B. Perform pre-session briefing of participants
- C. Discuss findings from usability test
- D. Communicate with test participant
正解：D
解説：
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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質問 # 22
What does the Equality Act address?
- A. It obligates organizations to make sites accessible at all costs
- B. It protects people from discrimination in the workplace and in wider society
- C. It states that websites have to adhere to the WCAG conformity level A
- D. It states that websites have to adhere to the WCAG conformity level AA
正解：B
解説：
The Equality Act 2010 (UK) is legislation designed to protect individuals from discrimination in various areas, including employment and access to goods and services-this includes digital products like websites.
While it does not directly mandate WCAG compliance levels (A or AA), it implies that digital services must be accessible to users with disabilities. Organizations are required to make "reasonable adjustments" to avoid discrimination. Therefore, the most accurate and comprehensive answer is B.
References:
UK Equality Act 2010 - Legislation.gov.uk
GOV.UK: Accessibility Requirements for Public Sector Bodies
質問 # 23
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 contact details of the test participants so that the development team can contact them in case they have questions
- B. Make the report more detailed and longer
- C. Include positive findings in the report, not only usability problems
- D. Add the low-priority findings you didn't include in the first report
正解：C
解説：
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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質問 # 24
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 that the usability test plan has been properly reviewed
- D. Check consumed resources regularly and compare with the estimates
正解：D
解説：
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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質問 # 25
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 misses a description of the evaluation method
- D. The report makes use of usability jargon
正解：C
解説：
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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質問 # 26
You're asked to evaluate the direct interaction between ordinary users and the software product. Which kinds of evaluations would be suited for that?
- A. Accessibility evaluation
- B. Risk assessment
- C. Usability maturity assessment
- D. Usability evaluation
正解：D
解説：
A usability evaluation is specifically designed to assess how real users interact with a software product. It focuses on effectiveness, efficiency, and user satisfaction in completing tasks. This may involve usability testing, expert reviews, or heuristic evaluations. The goal is to identify any usability problems and understand user behavior during real use.
Option A (Accessibility evaluation) targets inclusivity for users with disabilities, not general user interaction.
Option B (Usability maturity assessment) evaluates the organization's usability practices, and Option C (Risk assessment) evaluates potential project or system risks. Only option D directly involves observing and measuring user interaction.
References:
ISO 9241-11:2018 - Usability Definitions and Concepts
Usability.gov: Usability Evaluation Basics
Nielsen Norman Group: Types of Usability Evaluations
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質問 # 27
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