オンライン問題で最適なCT-UT試験練習問題（最新の40問題)
練習問題CT-UT素晴らしい練習用のISTQB Certified Tester Usability Testerテスト問題
質問 # 12
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
正解：A
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 # 13
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 and iii are true
- B. i is true, ii & iii are false
- C. i & ii are true, iii is false
- D. ii & iii are true, i is false
正解：A
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 # 14
Why are positive usability findings of high importance? Which of the following statements is wrong?
- A. Positive findings are of high importance because they can be used in the report to justify the costs of the test.
- B. Positive usability findings make it easier to sell the need for correcting usability problems by giving a balanced view.
- C. Positive usability findings should be used to communicate to the development team which features should not be modified or deleted.
- D. Positive usability findings allow a better view of the usability of the product.
正解：A
解説：
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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質問 # 15
Which of the following statements best describe Rapid Iterative Testing and Evaluation?
- A. Testing focuses on instant redesigns and confirming made changes
- B. Testing is informal and many potential users can be accessed
- C. Testing is quantitative
- D. Testing happens on a regular basis, e.g. each Monday
正解：A
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 # 16
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. Make the report more detailed and longer
- C. Add the low-priority findings you didn't include in the first report
- D. Include contact details of the test participants so that the development team can contact them in case they have questions
正解：A
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 # 17
What location is NOT suitable for conducting a usability test?
- A. A room where no action of the user can be seen or recorded by any means.
- B. Two office rooms that are connected by a video link.
- C. A room at the place where the test participant lives or works.
- D. A public place, such as a cafe.
正解：A
解説：
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
質問 # 18
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. Usability problem
- B. Good idea
- C. Functional problem
- D. Positive finding
正解：B
解説：
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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質問 # 19
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. Usability standards
- C. Functional requirements
- 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 # 20
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 review
- C. Unmoderated usability test
- D. Usability maturity assessment
正解：B
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 # 21
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 usability test execution activity specified by the moderator that needs to be accomplished by a usability test participant within a given period of time.
- 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 requirement on the usability of a component of system
正解：A
解説：
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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質問 # 22
Your project manager asked you for your advice. A recent project failed because the users were not satisfied with the final product, although your project manager claimed that she followed the human-centered design process. She interviewed users at the start of the project, created a first prototype and evaluated that prototype.
Which part of the human-centered design process did she miss?
- A. The "analyze"-part
- B. The "iterate"-part
- C. The "design"-part
- D. The "evaluate"-part
正解：B
解説：
The human-centered design process emphasizes iterative development-testing and refining designs through multiple cycles. In the scenario, the project manager interviewed users and evaluated a prototype but did not iterate based on feedback. Skipping iteration likely resulted in unmet user needs. Human-centered design, per ISO 9241-210, includes: understanding context of use, specifying requirements, producing design solutions, and evaluating-repeated iteratively. Hence, option D ("iterate") is correct.
References:
ISO 9241-210:2019 - Human-Centered Design Processes
Usability.gov: Human-Centered Design Activities
Nielsen Norman Group: Iterative Design in UX
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質問 # 23
What does the Equality Act address?
- A. It states that websites have to adhere to the WCAG conformity level AA
- B. It states that websites have to adhere to the WCAG conformity level A
- C. It obligates organizations to make sites accessible at all costs
- D. It protects people from discrimination in the workplace and in wider society
正解：D
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 # 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 the usability test plan has been properly reviewed
- B. Check that findings are communicated to the stakeholders
- C. Check consumed resources regularly and compare with the estimates
- D. Check whether the usability test report conforms to the best practices
正解：C
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
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, ii & iii are true, iv & v are false
- C. ii & iv are true, i, iii & v are false
- D. i & iii are true, ii, iv & v are false
正解：A
解説：
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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質問 # 26
In a short conversation, a potential customer mentions that accessibility is of great importance to them. What does this mean?
- A. They also seek to address users with limitations
- B. They focus on agile development
- C. They use prototyping in their development process
- D. They focus on quantitative usability evaluations
正解：A
解説：
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
質問 # 27
Which of the following are advantages of using a usability lab?
i. The context is natural
ii. Test sessions are easy to observe
iii. Inexpensive setup
iv. Similar conditions for all sessions
v. Easy recording of sessions
- A. i, ii & v are true, iii & iv are false
- B. iii, iv & v are true, i & ii are false
- C. ii, iv & v are true, i & iii are false
- D. ii & iv are true, i, iii & v are false
正解：C
解説：
Usability labs provide a controlled environment that offers several advantages for observing and recording usability test sessions. Specifically, they allow for easy observation of participants (ii), standardized conditions for each session (iv), and facilitate audio and video recording for detailed analysis (v). However, the context is not natural (i), because the lab is an artificial setting rather than the user's actual environment.
Also, setting up a professional usability lab is not inexpensive (iii); it typically involves significant costs for equipment, space, and staffing. Therefore, options ii, iv, and v are true, while i and iii are false.
References:
Nielsen Norman Group: Usability Labs - Pros and Cons
ISO 25062:2006 - Usability Test Reporting
Usability.gov: Setting Up a Usability Lab
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質問 # 28
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