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Comparing a waterfall and an iterative approach for a product whose requirements are not yet settled, the iterative approach

  • A.guarantees that the schedule will be met
  • B.removes the need for a requirements document altogether
  • C.is unsuitable wherever hardware is involved
  • D.surfaces the misunderstanding earlier, when it is cheap

Answer: D

Building something small and showing it is the fastest way to discover what the customer actually meant, which a document review often fails to reveal. Requirements are still written down, and the hardware iterates in fewer and larger steps than the software.

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