CompTIA
220-1002 · Question #666
220-1002 Question #666: Real Exam Question with Answer & Explanation
The correct answer is A: Battery backup. A battery backup (UPS) provides instant, seamless power from an internal battery the moment utility power fails, making it the only device suited for protecting a computer during a blackout.
Question
Which of the following would MOST likely be connected to a computer to provide electricity in case of a blackout?
Options
- ABattery backup
- BSurge suppressor
- CPortable generator
- DPower inverter
Explanation
A battery backup (UPS) provides instant, seamless power from an internal battery the moment utility power fails, making it the only device suited for protecting a computer during a blackout.
Common mistakes.
- B. A surge suppressor protects against voltage spikes and electrical surges but contains no battery and provides zero backup power when utility power is completely lost.
- C. A portable generator can supply power during extended outages but has a startup delay, requires manual intervention, and is not directly connected for seamless failover.
- D. A power inverter converts DC to AC power but is not a standalone backup solution - it requires a separate battery source and is not designed as a direct, plug-in computer backup device.
Concept tested. UPS battery backup function during power outages
Reference. https://www.comptia.org/training/books/a-core-1-220-1101-study-guide
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