User Experience Design Quality Control & Assurance 4

Question 1

A mobile app fails to provide sufficient color contrast for body text. According to WCAG 2.1 Level AA, what is the minimum contrast ratio required for normal text?

Accepted Answer

4.5:1

Answer

WCAG 2.1 Level AA requires a minimum contrast ratio of 4.5:1 for normal text (below 18pt or 14pt bold) against its background.

Question 2

What is a 'bug bash' in the context of UX/product QA?

Accepted Answer

A time-boxed event where the entire team collectively tests the product to find as many issues as possible

Answer

A bug bash is a collaborative, time-boxed session where cross-functional team members simultaneously explore the product to surface bugs and UX issues before launch.

Question 3

Which severity level should a UX issue be assigned if it prevents task completion for all users but has an easy workaround?

Accepted Answer

Major — high priority

Answer

An issue that blocks all users from completing a task is major even with a workaround, because not all users will discover it and it degrades the experience significantly.

Question 4

In UX QA, what does 'think-aloud protocol' help evaluators collect?

Accepted Answer

Qualitative data on users' mental models, confusion points, and decision rationale

Answer

The think-aloud protocol captures users' verbal reasoning as they interact with a product, revealing mental models, misunderstandings, and decision points that metrics alone cannot show.

Question 5

A QA engineer wants to test that a date picker works correctly across all valid input combinations. Which testing technique is MOST efficient for this?

Accepted Answer

Equivalence partitioning and boundary value analysis

Answer

Equivalence partitioning groups valid and invalid inputs into classes, and boundary value analysis tests edge values (e.g., Feb 28/29, Dec 31), covering the most critical cases efficiently.

User Experience Design Practice Test

User Experience Design Practice Test

User Experience Design Quality Control & Assurance 4