ITPEC IP October 2023 Question 47
Among the requirements for the design of screens A through D below, which of the following is the list that contains all the items that are to be considered for easy-to-use for system users?
Explanation
B, C, D — ease of learning, the layout of pushbuttons, and the size and colour of text all decide how easy a screen is to use.
Screen design for usability considers how quickly users learn to operate the screen (B), where controls such as pushbuttons are placed so that the flow of work is natural and mistakes are avoided (C), and whether text is legible, by its size and by colour contrast (D). These are properties of the screen itself.
Item A, the time to recover from a failure, is a property of system operation (MTTR, maintainability), decided by backup, repair and recovery procedures, not by screen design.
Answer (d)
Why not others:
- •(a) A, B, C, (b) A, B, D and (c) A, C, D — each includes A, recovery time after a failure, and so leaves out one of the genuine screen design items
Key rule: Usability of a screen covers learnability, layout of controls and legibility; reliability figures such as recovery time belong to system operation.
Human Interface · AI-written, may contain errors
This question comes from an official ITPEC past paper. ITPEC Practice is an independent study tool and is not affiliated with ITPEC. See the official IP past-paper collection or Report an issue.