CT-UT: Certified Tester Usability Testing

By ISTQB · Browse Mode
About the Exam

ISTQB CT-UT covers usability testing methods and approaches, including usability, user experience, and accessibility evaluation, as well as relevant standards and risks. It is aimed at software testers who want to broaden their usability testing knowledge, people starting a specialist usability testing career, and usability engineers who need to understand testing. Passing demonstrates the candidate can set up, plan, conduct, analyze, and communicate usability, UX, and accessibility evaluations in practice.

Exam Topics

  • Basic Concepts25%
  • Evaluating Usability, User Experience and Accessibility11%
  • Usability Evaluation in Human-Centered Design16%
  • Risks in Usability, User Experience and Accessibility11%
  • Usability Reviews25%
  • Usability Testing4%
  • User Surveys5%
  • Selecting Appropriate Methods4%
  • Summary of Roles and Responsibilities4%

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Last updated December 3, 2025 at 6:14 AM

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QuestionQ1

Usability Testing

Which of the following is an essential activity during a usability testing session?

Explanation

Moderating the usability test is the core live-session activity: the moderator introduces the study, presents tasks, observes participant behavior, and asks appropriate follow-up questions without unduly influencing task performance.

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QuestionQ2

User Surveys

You are conducting a user survey and have reached the third stage: choosing an appropriate questionnaire. You have decided to use a standardized questionnaire because you want to benchmark against earlier usability measurements.

Which of the following user questionnaires permit benchmarking against previous usability measurements?

  1. SUS
  2. SUMI
  3. WAMMI
Explanation

SUS, SUMI, and WAMMI are standardized usability questionnaires designed to produce comparable scores. Each has established comparative data or norms that support benchmarking usability results against prior measurements.

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QuestionQ3

Basic Concepts

A “usability test participant” is …

Explanation

A usability-test participant is a representative user who performs typical tasks to evaluate how usable a system is.

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QuestionQ4

Basic Concepts

A “usability requirement” refers to

Explanation

A usability requirement defines an expected aspect or level of usability for a component or system, such as effectiveness, efficiency, satisfaction, accessibility, or learnability.

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QuestionQ5

Evaluating Usability, User Experience and Accessibility

A company sells its products through a web shop in which users can add items to a shopping cart. After clicking “checkout,” the checkout process begins and users can no longer go back to correct possible mistakes. Their only option is to use the browser’s “back” button, which may cause the session to expire and all shopping-cart items to be lost.

Which of the following heuristics best describes this usability issue?

Explanation

User interfaces should give users a clearly marked way to leave an unwanted state and to undo or reverse actions. A checkout process that prevents returning to correct mistakes violates user control and freedom.

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Topics covered
Basic ConceptsEvaluating Usability, User Experience and AccessibilityUsability Evaluation in Human-Centered DesignRisks in Usability, User Experience and AccessibilityUsability ReviewsUsability TestingUser SurveysSelecting Appropriate MethodsSummary of Roles and Responsibilities
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