Preventing data loss during power disturbances Which option best ensures short power interruptions do not corrupt data on a computer system?

Introduction / Context:
Power quality issues—sags, surges, and brief outages—can crash systems and corrupt filesystems. Selecting the correct protection device is critical for business continuity and home users alike.

Given Data / Assumptions:

• The objective is to bridge short interruptions and allow safe shutdown.
• Standard AC mains environment is assumed.
• Computer equipment includes storage devices sensitive to sudden power loss.

Concept / Approach:

A UPS provides battery-backed AC power for a limited period, absorbing sags and covering brief outages. Surge protectors clamp high-voltage transients but do not supply power during outages. Proper grounding is essential for safety and noise control but cannot maintain power in a blackout.

Step-by-Step Solution:

Verification / Alternative check:

Vendor specifications for line-interactive and online UPS systems show ride-through capabilities ranging from minutes to hours depending on load and battery capacity.

Why Other Options Are Wrong:

Grounding improves safety/EMI but not continuity. Surge protectors address spikes, not outages. The humorous option is irrelevant. “None of the above” is wrong because UPS is correct.

Common Pitfalls:

Assuming a surge strip prevents data loss during blackouts; undersizing UPS capacity; forgetting to install power management software for graceful shutdown.

Final Answer:

UPS (Uninterruptible Power Supply).