Network Monitoring
Continuously observing network performance, availability, and traffic to detect problems early.
Network monitoring is the continuous collection and analysis of performance metrics, availability data, and traffic patterns across a network infrastructure. Tools gather data using protocols such as SNMP (UDP port 161) for device polling and syslog (UDP port 514) for centralized log aggregation, then trigger alerts when thresholds are breached. The exam frequently tests the distinction between proactive and reactive monitoring. Establishing a documented baseline first is what makes anomaly detection meaningful — without one, high CPU or bandwidth spikes have no reference point. Watch for questions that conflate ongoing monitoring with a one-time network assessment or audit, which are scoped, point-in-time activities.
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