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What device prevents power interruptions, resulting in corrupted data?

  • A.Battery back-up unit
  • B.Surge protector
  • C.Multiple SIMMs strips
  • D.Data guard system

Answer: A

Correct answer: Battery back-up unit

Only a UPS keeps the machine running through a power interruption, so that work in memory is written out and the system shut down properly. A surge protector guards against excess voltage but supplies nothing when the mains fails.

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