ITPEC IP April 2023 Question 98
ITPEC IP April 2023 — Question 98 of 100
Limiting annual failure-related downtime to ten hours is a non-functional availability requirement. It specifies a quality level the system must achieve rather than a business operation it must perform. The other listed non-functional examples likewise concern performance and security.
Answer (a)
Why not others:
- (b) specifies the business procedure for correcting entry errors
- (c) specifies an automatic data-extraction function
- (d) specifies that the system must support changing the companies included in consolidation
Key rule: Functional requirements describe what the system does; non-functional requirements describe qualities or constraints such as availability, performance, security, reliability, and usability.
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