Which one of the following refers to the non-functional requirements like…
2023
Which one of the following refers to the non-functional requirements like disaster recovery, security, reliability, etc.?
- A.
Service Development
- B.
Quality of Service
- C.
Plan Development
- D.
Technical Service
Attempted by 5 students.
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Correct answer: B
Non-functional requirements (NFRs) specify HOW WELL a system must perform, qualities such as reliability, security, performance, and disaster-recovery capability, as opposed to functional requirements, which specify WHAT the system does. This category of quality attributes is commonly called Quality of Service (QoS).
The question lists exactly these quality attributes, disaster recovery, security, reliability, so the term being described is Quality of Service, since QoS is the standard label for the set of non-functional constraints a system must satisfy.
The other options name different software-development-lifecycle activities, not requirement categories:
Service Development: the phase of building and delivering a service, an SDLC activity, not a classification of requirements.
Plan Development: project planning and scheduling work, unrelated to system quality attributes.
Technical Service: post-deployment support and maintenance activity, not a requirement type.