UX Design MCQ 5 — Questions and Answers
Question 1: What is the main benefit of conducting a heuristic evaluation before user testing?
- It replaces the need for user testing entirely
- It identifies obvious usability issues early with lower cost and time (Correct answer)
- It validates designs with real users in context
- It generates quantitative usability metrics
Correct answer: It identifies obvious usability issues early with lower cost and time
Heuristic evaluation uses expert reviewers to catch common usability problems quickly and cheaply before investing in user testing.
Question 2: Which of Nielsen's 10 usability heuristics is violated when a system uses different words for the same action across screens?
- Error prevention
- Consistency and standards (Correct answer)
- Visibility of system status
- Recognition rather than recall
Correct answer: Consistency and standards
The 'Consistency and standards' heuristic requires that the same words, actions, and situations mean the same thing throughout the product.
Question 3: A product team wants to understand the context in which users interact with their app during daily commutes. Which research method is MOST appropriate?
- Online survey
- Contextual inquiry (Correct answer)
- A/B testing
- Tree testing
Correct answer: Contextual inquiry
Contextual inquiry involves observing and interviewing users in their natural environment, revealing real-world behaviors and constraints.
Question 4: What does a 'task flow' diagram represent in UX design?
- The visual color scheme applied to each screen
- The sequence of steps a user takes to complete a specific task (Correct answer)
- The backend API calls triggered by user actions
- The hierarchy of pages in a sitemap
Correct answer: The sequence of steps a user takes to complete a specific task
A task flow maps the linear sequence of actions and decisions a user must take from start to finish to accomplish a goal.
Question 5: Which layout grid unit helps maintain consistent spacing and sizing across a UI by using multiples of a base number?
- Fibonacci sequence
- 8-point grid (Correct answer)
- Golden ratio grid
- 12-column fluid grid
Correct answer: 8-point grid
The 8-point grid system uses multiples of 8px for all spacing and sizing decisions, creating visual harmony and consistency.
Question 6: A mobile app's primary action button is placed at the top center of the screen. Why is this considered poor mobile UX?
- Top-center buttons look visually unbalanced
- It falls outside the natural thumb reach zone for one-handed use (Correct answer)
- Buttons should always be on the left side
- Top placement increases accidental taps
Correct answer: It falls outside the natural thumb reach zone for one-handed use
Most users hold phones with one hand, making the top-center area difficult to reach; primary actions should be in the lower-center thumb zone.
Question 7: What distinguishes 'usability' from 'utility' in UX evaluation?
- Usability measures visual appeal; utility measures function
- Usability measures how easily users accomplish tasks; utility measures whether the right features exist (Correct answer)
- They are interchangeable terms in UX design
- Utility is measured by user satisfaction scores; usability by error rates
Correct answer: Usability measures how easily users accomplish tasks; utility measures whether the right features exist
Utility asks whether the product has the features users need, while usability asks whether users can successfully use those features.
UX Design MCQ 5
What is the main benefit of conducting a heuristic evaluation before user testing?