Which device provides battery-powered AC power for equipment during power loss?

Which device provides battery-powered AC power for equipment during power loss?

• A. uninterruptible power supply (UPS)
• B. PDU
• C. backup power generator
• D. geographic dispersion

Answer: (A)

The device that provides battery-powered AC power for equipment during power loss is the uninterruptible power supply. A UPS sits between the mains and the gear and uses its internal batteries to keep power flowing the moment the wall supply drops, so equipment continues running without interruption. This immediate backup is essential for preventing data loss and for giving you time to shut down safely or switch over to a longer-term power source. In contrast, a power distribution unit simply routes power and doesn’t store energy, a backup power generator delivers AC power but usually needs time to start and fuel, leaving a gap during the outage, and geographic dispersion relates to distributing resources across locations rather than providing immediate power backup.

The device that provides battery-powered AC power for equipment during power loss is the uninterruptible power supply. A UPS sits between the mains and the gear and uses its internal batteries to keep power flowing the moment the wall supply drops, so equipment continues running without interruption. This immediate backup is essential for preventing data loss and for giving you time to shut down safely or switch over to a longer-term power source. In contrast, a power distribution unit simply routes power and doesn’t store energy, a backup power generator delivers AC power but usually needs time to start and fuel, leaving a gap during the outage, and geographic dispersion relates to distributing resources across locations rather than providing immediate power backup.