IPA IP 2021 Question 46
A question IPA Japan published in 令和3年度 ITパスポート試験 公開問題 問46, translated into English. ITPEC is based on the same exams.
Among the things that are clarified in system requirements definition, which of the following is a requirement concerning performance?
Explanation
Response time of the inquiry function — performance requirements state how fast and how much the system must process.
System requirements definition clarifies the functional requirements, what the system does for the business, and the non-functional requirements, how well it does it. Performance is one of the non-functional categories, set by measures such as response time, throughput and the volume of transactions to be handled. How quickly the inquiry function returns its result is therefore a performance requirement.
Answer (c)
Why not others:
- •(a) — the functions that implement the business requirements are functional requirements, not a performance requirement
- •(b) — the availability of the system, the share of time it can be used, is a reliability (availability) requirement
- •(d) — the recovery time from a failure, how soon the service is restored, is also a reliability (availability) requirement, not performance
Key rule: Performance requirements are about speed and volume (response time, throughput); availability and recovery time belong to reliability.
System Development Technology · AI-written, may contain errors
This question comes from the past questions IPA Japan publishes, translated into English by ITPEC Practice. ITPEC Practice is an independent study tool and is not affiliated with IPA or ITPEC. See the original paper (PDF) or Report an issue.