Why is a network baseline important for troubleshooting?

• A. It serves as the security policy for the network
• B. It provides a reference for normal performance metrics used to detect deviations
• C. It lists all devices in the network and their configurations
• D. It defines the service-level objectives for the year

Answer: (B)

A network baseline is a reference point for normal network behavior. It captures typical performance metrics and usage patterns, such as latency, throughput, packet loss, and device resource utilization, as well as normal traffic flows and patterns over a representative period.

When troubleshooting, comparing current measurements to the baseline helps you spot anomalies quickly, pinpoint where problems are likely occurring, and decide what corrective action is needed. It also helps distinguish temporary spikes from real issues and guides decisions about fixes or further investigation.

This isn’t a security policy, which governs access and protections. It isn’t simply a list of devices and configurations, which is asset management. And it isn’t about service-level objectives, which set targets rather than describe normal behavior.