Which two performance tools can be used to monitor virtual machines outside the guest operating system?

The choice of vCenter Server performance charts is a valid selection for monitoring virtual machines outside the guest operating system. These performance charts provide a comprehensive view of the resources consumed by virtual machines, such as CPU, memory, disk, and network utilization, from the hypervisor's perspective. This means that administrators can analyze and gather statistics directly from the VMware infrastructure, offering insights into the overall performance of virtual machines without needing to access the OS running within the VM.

Using vCenter Server performance charts allows for real-time monitoring and historical data analysis, which is essential for identifying trends and performance bottlenecks in the virtualized environment. Additionally, because the data is collected at the hypervisor level, it reflects the performance impact of the entire virtualization infrastructure rather than being limited to what is reported by the guest OS itself.

The other tools mentioned serve different purposes or operate within the constraints of the guest OS. For instance, top and Task Manager provide metrics on processes running within the Linux and Windows environments, respectively, while Perfmon is a Windows-specific tool for performance monitoring but still operates inside the guest OS. Esxtop, while powerful, is primarily used for monitoring the ESXi host performance and requires a command-line interface that reflects host-level statistics rather than focused virtual