Q. What is the purpose of defining the attribute "backward recoverability" in terms of a measuring concept?

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Q. What does the "now level" indicate in the usability specification?

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Q. Why should the "worst case value" for a usability attribute be no lower than the "now level"?

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Q. What does the "best case" value for a usability attribute represent?

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Q. What are usability metrics?

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Q. What is the major feature of usability engineering?

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Q. What is a problem with usability metrics at early stages of design?

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Q. What is a limitation of usability engineering?

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Q. Why does usability engineering not necessarily guarantee usability for real people?

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Q. Which approach to prototyping involves building a prototype and then using the design knowledge gained to build the final product, discarding the actual prototype?

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Q. In the incremental approach to prototyping, how is the final product built?

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Q. Which prototyping approach involves using the prototype as the basis for the next iteration of design, and the actual system evolves from an initial limited version to its final release?

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Q. What is the main purpose of iterative design?

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Q. What is the main advantage of using a prototype in the design process of an interactive system?

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Q. Why is providing realism in a prototype considered costly?

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Q. What is the term used to describe the design process that involves fast development and manipulation of a prototype?

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Q. What potential problem does the use of prototypes in the design process pose for project managers?

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Q. What issue must be addressed when using a prototype to evaluate usability features of an interactive system?

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Q. Which of the following techniques for prototyping involves a graphical depiction of the outward appearance of the intended system without any accompanying system functionality?

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Q. What is the primary purpose of using storyboards in the design process of interactive systems?

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