Protecting Against Power Interruptions Which device specifically supplies temporary backup power to prevent interruptions that may corrupt data?

Introduction / Context:
Data corruption often occurs when power fails during writes or updates. The correct protective device must provide actual energy during outages, not just noise suppression, so that systems can continue operating or shut down gracefully.

Given Data / Assumptions:

• We need to bridge short power losses to avoid abrupt shutdowns.
• The solution should be functionally equivalent to an Uninterruptible Power Supply (UPS).
• Other options may protect against surges or be irrelevant to power continuity.

Concept / Approach:

A battery back-up unit (UPS) contains batteries and inverter circuitry to deliver AC power during an outage. This prevents immediate shutdown and data loss. Surge protectors clamp voltage spikes but do not power equipment. Extra memory modules or vague “data guard” labels do not address the root problem, and turning off AC power obviously does not help.

Step-by-Step Solution:

Verification / Alternative check:

UPS specifications list runtime and load ratings; many include USB signaling for automatic shutdown, confirming their role in preventing corruption.

Why Other Options Are Wrong:

Surge protectors lack energy storage. Memory quantity has no effect on power continuity. “Data guard system” is not a standard power device, and turning power off does nothing to protect data.

Common Pitfalls:

Confusing surge suppression with power backup. Always ensure batteries are maintained to keep backup effective.

Final Answer:

Battery back-up unit