WGU C773 - User Interface Design Study Guide
Disclaimer: This guide is based on the publicly available course competencies and
standard UI/UX principles. Always use the official WGU course materials as your
primary source. This guide is intended for review and illustrative purposes.
Domain 1: Foundations of UI Design and User-Centered Principles
1. Define the term "user interface (UI)."
ANSWER ✓ The user interface is the point of human-computer interaction and
communication in a device, software, or application. It includes all the elements a
user interacts with—screens, pages, buttons, icons, menus, and gestures—to
effectively control and use the product.
2. What is the primary goal of User-Centered Design (UCD)?
ANSWER ✓ The primary goal is to design products that are easy to use and
meet the specific needs of the end-user. It involves users throughout the design
process via research, testing, and iterative refinement.
3. Contrast UI (User Interface) and UX (User Experience).
ANSWER ✓ UI is what you use; UX is how you feel using it. UI refers to
the visual, interactive elements (the look and layout). UX encompasses the entire
user's journey and interaction, including their emotions, perceptions, and overall
satisfaction.
4. Describe the importance of accessibility in UI design.
ANSWER ✓ Accessibility ensures that products are usable by people with the
widest range of abilities, including those with visual, auditory, motor, or cognitive
disabilities. It's a legal and ethical requirement that also expands your potential
user base.
, 5. What are the four core principles of WCAG (Web Content Accessibility
Guidelines)?
ANSWER ✓ The principles form the acronym POUR: Perceivable (info must be
presentable in ways users can perceive), Operable (UI components must be
navigable and usable), Understandable (info and operation must be clear),
and Robust (content must be interpretable by various assistive technologies).
6. Define "affordance" in the context of UI.
ANSWER ✓ An affordance is a visual cue that suggests how an object should
be used. For example, a button on a screen affords clicking because its 3D
appearance mimics a physical button.
7. What is a "mental model" and why is it important?
ANSWER ✓ A mental model is the user's internal understanding of how a
system works. A good UI aligns with the user's mental model (e.g., a trash can
icon for deletion), making the system intuitive and easy to learn.
8. Explain the concept of "human factors" in design.
ANSWER ✓ Human factors (or ergonomics) is the scientific discipline
concerned with understanding human abilities and limitations (e.g., memory,
perception, attention) and applying that knowledge to design safer, more efficient,
and more intuitive products.
9. What is the role of a "persona" in the UCD process?
ANSWER ✓ A persona is a fictional, archetypal representation of a key user
segment. It is based on real user research and helps the design team empathize
with and make decisions for the target user by giving them a name, story, and
goals.
10. List three common user research methods.
ANSWER ✓ Common methods include: 1) Surveys/Questionnaires, 2) User
Interviews, and 3) Usability Testing.
Disclaimer: This guide is based on the publicly available course competencies and
standard UI/UX principles. Always use the official WGU course materials as your
primary source. This guide is intended for review and illustrative purposes.
Domain 1: Foundations of UI Design and User-Centered Principles
1. Define the term "user interface (UI)."
ANSWER ✓ The user interface is the point of human-computer interaction and
communication in a device, software, or application. It includes all the elements a
user interacts with—screens, pages, buttons, icons, menus, and gestures—to
effectively control and use the product.
2. What is the primary goal of User-Centered Design (UCD)?
ANSWER ✓ The primary goal is to design products that are easy to use and
meet the specific needs of the end-user. It involves users throughout the design
process via research, testing, and iterative refinement.
3. Contrast UI (User Interface) and UX (User Experience).
ANSWER ✓ UI is what you use; UX is how you feel using it. UI refers to
the visual, interactive elements (the look and layout). UX encompasses the entire
user's journey and interaction, including their emotions, perceptions, and overall
satisfaction.
4. Describe the importance of accessibility in UI design.
ANSWER ✓ Accessibility ensures that products are usable by people with the
widest range of abilities, including those with visual, auditory, motor, or cognitive
disabilities. It's a legal and ethical requirement that also expands your potential
user base.
, 5. What are the four core principles of WCAG (Web Content Accessibility
Guidelines)?
ANSWER ✓ The principles form the acronym POUR: Perceivable (info must be
presentable in ways users can perceive), Operable (UI components must be
navigable and usable), Understandable (info and operation must be clear),
and Robust (content must be interpretable by various assistive technologies).
6. Define "affordance" in the context of UI.
ANSWER ✓ An affordance is a visual cue that suggests how an object should
be used. For example, a button on a screen affords clicking because its 3D
appearance mimics a physical button.
7. What is a "mental model" and why is it important?
ANSWER ✓ A mental model is the user's internal understanding of how a
system works. A good UI aligns with the user's mental model (e.g., a trash can
icon for deletion), making the system intuitive and easy to learn.
8. Explain the concept of "human factors" in design.
ANSWER ✓ Human factors (or ergonomics) is the scientific discipline
concerned with understanding human abilities and limitations (e.g., memory,
perception, attention) and applying that knowledge to design safer, more efficient,
and more intuitive products.
9. What is the role of a "persona" in the UCD process?
ANSWER ✓ A persona is a fictional, archetypal representation of a key user
segment. It is based on real user research and helps the design team empathize
with and make decisions for the target user by giving them a name, story, and
goals.
10. List three common user research methods.
ANSWER ✓ Common methods include: 1) Surveys/Questionnaires, 2) User
Interviews, and 3) Usability Testing.
