What provides digital evidence when investigating anomalous issues on a network?

Audit logs provide a crucial source of digital evidence when investigating anomalous issues on a network. These logs track and record a variety of activities and events that occur within a system or network, including user actions, system warnings, and errors. By examining these logs, security professionals can identify unusual or unauthorized activities that may indicate security breaches or other anomalies.

Audit logs typically include timestamps and details about the events that took place, making them invaluable in forensic investigations. They help analysts piece together what happened during a security incident and are essential for understanding the context of an anomaly.

While other choices such as network flow, data loss prevention, and file integrity monitoring serve important roles in overall network security, they do not specifically focus on recording and maintaining detailed accounts of actions taken within the network, which is fundamental for tracking irregularities and supporting investigations.