Usability CT-UT Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What does the usability measure 'time on task' indicate?

   • AThe overall usability score of the product.
   • BThe efficiency of users in completing a task.
   • CThe number of errors users make during a task.
   • DThe satisfaction level of users after completing a task.
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2. 22application · medium

   A usability test of a flight-booking website measures that 8 of 10 participants successfully booked a flight, but the average time was 15 minutes, and 2 participants entered the wrong departure date. Which usability measures are most directly indicated by these results?

   • AEffectiveness (high) and efficiency (low)
   • BSatisfaction (high) and effectiveness (low)
   • CEfficiency (high) and satisfaction (low)
   • DEffectiveness (low) and efficiency (high)
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4. 23application · medium

   A team is designing a mobile app for elderly users who have limited vision and motor control. The design includes large text, high contrast, and simple gestures. Which context-of-use components are most directly addressed by these design choices?

   • ATasks and environment
   • BEnvironment and users
   • CEquipment and tasks
   • DUsers and equipment
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5. 24foundation · easy

   Why is usability considered an important quality characteristic of a software product?

   • ABecause it determines the speed at which the software executes its algorithms.
   • BBecause it guarantees that the software will be secure from unauthorized access.
   • CBecause it ensures the software is free from programming bugs and runs without crashes.
   • DBecause it directly impacts user productivity, error reduction, and user satisfaction, which are critical for product success.
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6. 25expert · hard

   A software product is used by two different customer segments: expert users who work in a quiet office and novice users who work in a noisy call center. Usability tests show that the expert users are highly efficient, but novice users make many errors. The product manager wants to improve usability for both segments with a single design. Which approach is most appropriate?

   • ADesign for the novice users, because they have more errors and are a larger segment.
   • BConduct separate usability tests for each segment and choose the design with the best overall metrics.
   • CDesign a single interface that balances the needs of both, possibly with adaptive features.
   • DDesign for the expert users, because they are more efficient and represent the target market.
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