You have 10 NSGs each attached to a virtual machine and a Log Analytics workspace named Workspace1. To enable an Azure Monitor Network Insights alert that triggers on suspicious network traffic, what should you configure first?

To enable an Azure Monitor Network Insights alert for suspicious network traffic, you must first configure NSG flow logs. NSG flow logs capture information about IP traffic flowing through a Network Security Group (NSG), including source/destination IP, port, and protocol, which is essential for network monitoring and security analysis. Network Insights uses this flow log data to identify anomalies and potential threats. Connection Monitor is used for end-to-end connectivity checks, not for general traffic analysis. Data collection endpoints are for collecting data from virtual machines, not specifically NSG flow data. Private links provide private connectivity to Azure services, which is unrelated to monitoring NSG traffic.