Which percentage best describes the recommended maximum load on an alarm system's resources?

• A. 60%
• B. 70%
• C. 80%
• D. 100%

Answer: (C)

Balancing resource utilization with built-in slack is what this is about. An alarm system must handle normal operation while staying ready to absorb unexpected bursts, such as multiple events firing at once, logging, or communicating with monitoring centers. Keeping load around eighty percent provides that sweet spot: you’re using most of the capacity efficiently, but you still have about twenty percent headroom to absorb spikes or maintenance tasks without delaying or dropping signals. Pushing to full capacity leaves no room for these interruptions, risking slower responses or missed alarms. Using too low a load—like sixty or seventy percent—would underutilize resources and reduce efficiency, while eighty percent offers the best practical balance.