A car rental website does not offer users the opportunity to cancel a reservation. An analysis of the context of use shows that users need this function. Which one aspect of the ISO 9241 definition of usability is violated by this website?

• A.Accessibility
• B.Completeness
• C.Efficiency
• D.Effectiveness
• E.Satisfaction
• F.Speed

Correct Answer: D

Explanation
ISO 9241 -A family of standards covering human-centred design.
Note: 1.
ISO 9241 includes standards related to
a. Software ergonomics;
b. The human-centred design process;
c. Displays and display related hardware;
d. Physical input devices;
e. Workplace ergonomics;
f. Environment ergonomics;
g. Control centres

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What are qualitative user requirements?

• A.Qualitative user requirements provide a basis for the design of the interactive system and can be verified by evaluating the interactive system.
• B.Qualitative user requirements address the way in which the system is designed
• C.Qualitative user requirements set measurable design on quantitative user requirements
• D.Qualitative user requirements qualify the need for the user requirement in question
• E.Qualitative user requirements address the way in which the interactive system is used to arrive at a user goal
• F.Qualitative user requirements set measurable goals for usability and user experience.

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Fill in the blank:
______________is based upon an explicit understanding of users, goals, tasks, resources and environments.
Users are involved throughout the design. The design is driven and refined by usability evaluation.
The process is iterative -that is, it continues until the user requirements are met.
The design addresses the whole user experience (UX).

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Fill in the blank;
A task is a set of activities undertaken in order to achieve a specific_____________.

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