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Early vs. Late Spiral Rings
publish date: 2026/06/06 19:27:17.130361 UTC
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In the spiral RE process model, what type of work is primarily done in the inner rings (early iterations) compared to the outer rings (later iterations)?
Correct Answer
Inner rings: high-level business requirements and user requirements; Outer rings: detailed system requirements
Explanation
Early in the RE process (inner rings), most effort is spent on understanding high-level business and non-functional requirements and user requirements. Later in the process (outer rings), more effort is devoted to eliciting, understanding, and specifying the detailed system requirements.
Reference
Software Engineering, Ian Sommerville, 9th edition