All electrical power issues can affect availability and integrity of information security.
As a CISSP (and for the exam), you must be aware and ready to deal with each issue in regards to your organization. This is going to be a short post on power issues, and from my studies, is required knowledge for the exam.
Too Much Power
Spike High amount of voltage for a short time.
Surge High amount voltage for a long time.
Decline of Power
Sag/Dip Low amount of voltage for a short time.
Brownout Low amount of voltage for a long time.
Fault No power for a short time.
Blackout No power for a long time.
Uninterruptible Power Supply
Serves as a backup power source in the event of a short power outage or times of voltage fluctuations
Protects against surges, spikes, blackout, brownout, faults…
Protects hardware and equipment from power fluctuations, such as changes in voltage
Protects against spikes, surges
Serves as a backup power source in the event of a long power outage
Protects against blackouts
Being a CISSP isn’t all about firewalls, risk analysis, or security frameworks.
Sometimes CISSPs have to just crawl under dusty desks and make sure things are plugged in and readily have power.