AVEVA Historian Server Practice Exam 2025 – The All-in-One Guide to Master Your Certification!

Event latency in the context of event detection specifically refers to the amount of time that elapses between when an event actually occurs and when it is detected by the system. This is crucial in many applications, as it affects how promptly a system can respond to significant changes or anomalies.

For instance, in monitoring and control systems, a high event latency could mean that by the time the system is aware of a critical situation, it may be too late to take effective corrective action. Understanding this concept allows professionals to assess the responsiveness and reliability of their monitoring systems and make necessary improvements.

The other choices, while related to event detection, address different aspects: processing time pertains to how quickly the system can handle or analyze an event post-detection, frequency pertains to how often events occur, and duration deals with the length of time the event itself lasts, none of which capture the core idea of latency in detection.