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CompTIA Security+ 3.4
TechKnowSurge Catalog Interactives What Kept the Power On?
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What Kept the Power On?

Something in the power went wrong and nothing went down. Which part of the power path saved it?

⚑ Complete this interactive to capture a CTF flag worth 5 points.

About this interactive

The lesson follows the power path in its own rack. Power supplies: each storage unit has two, so one can fail. Power distribution units (PDUs): each of the two supplies plugs into a different PDU, one on each side of the rack, so a whole PDU can be lost. UPS: each PDU goes back to a different uninterruptible power supply, on different circuits. A UPS is battery backup that takes over instantly when utility power drops. Generator: when the utility goes out, the backup generator starts. It takes about five seconds or more to spin up and take over, which would be an outage on its own. The UPS bridges that gap, then the generator carries the load for as long as the outage lasts. To sort a card, ask where the problem was and how long it lasted.

What you'll learn

Aligned to

CompTIA Security+
3.4 Explain the importance of resilience and recovery in security architecture.

Key terms

Uninterruptible Power Supply
UPS
A battery-backed power device that provides continuous power to connected equipment during utility power outages or voltage fluctuations, allowing safe shutdown or continued operation. UPS units are essential for servers and critical infrastructure to prevent data loss.
Backup Generator
A fuel-powered electrical generator that activates during a utility power outage to supply sustained power to critical systems.
Power Distribution Unit
PDU
A device that distributes electrical power from a single source to multiple networking devices, servers, or other equipment within a data center rack. Intelligent PDUs can monitor per-outlet power consumption and provide remote switching capabilities.
Redundant Power Supply
A duplicate power supply unit installed in a device so that if one fails, the other maintains operation without interruption.

Topics

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