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Continuous integration is valuable for firmware chiefly because it

  • A.guarantees that the firmware meets its timing requirements
  • B.replaces the need for code review
  • C.builds and tests every change, so a break is found at once
  • D.removes the need for on-target testing

Answer: C

Correct answer: builds and tests every change, so a break is found at once

The value is in the immediacy: a defect found within minutes is attributable to a change the author still has in mind, while one found weeks later must be searched for. It also keeps the build itself working, which prevents the long integration phase that appears when everyone has been building only their own part. It does not replace review or on-target testing, both of which catch different things.

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