You have an Azure subscription with 10 virtual machines. You need to monitor latency between your on-premises network and those virtual machines. Which tool should you use?

Network Performance Monitor (NPM) is the correct tool because it provides capabilities to monitor connectivity between Azure deployments and on-premises locations, including latency and packet loss. It uses agents on virtual machines and on-premises servers to collect network performance data. Service Map is incorrect because it visualizes connections between servers and processes, not network latency between different locations. Connection troubleshoot is incorrect as it's a diagnostic tool for individual connection issues, not continuous monitoring of overall network performance. Effective routes is incorrect because it shows the routing table for a network interface, which is about routing paths, not latency monitoring.