A Linux monitoring platform samples the /var filesystem every minute. The tool is configured so that the first time a sample shows 90 percent (or more) usage it records the state change internally but does not contact the on-call staff. If the next four samples are also above the limit, the tool escalates and sends paging and e-mail messages. Which monitoring configuration concept best describes the state that is recorded after the very first threshold breach, before any escalation occurs?
The moment the filesystem crosses the 90 percent limit, the monitoring system registers a change of state. That recorded change is an event: raw, time-stamped information indicating something significant has happened. An alert is generated only after the system decides the event needs attention (in this scenario, after five consecutive events), and a notification is the message that delivers that alert to administrators. The 90 percent figure itself is the threshold. Because the question asks about the state recorded immediately after the first breach-before an alert or notification-the correct choice is the event.
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Why is the recorded state after the first threshold breach called an event?
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How do events differ from alerts in a monitoring system?
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What role does a threshold play in defining events, alerts, and notifications?
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CompTIA Linux+ XK0-006 (V8)
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