What feature provides a mechanism for a virtual machine to revert to a previous configuration state?

Snapshots are a key feature in VMware environments that allow a virtual machine to revert to a specific point in time. When a snapshot is taken, it captures the current state of the virtual machine, including its disk files, memory, and settings. This enables administrators to save the condition of the VM at that moment, creating a backup that can be returned to if needed.

If changes are made to the virtual machine or if an update results in issues, the administrator can utilize the snapshot to restore the VM to its previous state, providing a safeguard against data loss or system failure. This rollback capability is particularly useful during software updates or configuration changes, as it reduces the risk associated with experimenting or modifying the VM's environment.

Other features mentioned, such as Storage I/O Control, Bus Sharing, and vSphere HA, serve different purposes within virtualized environments. Storage I/O Control manages disk I/O resources to ensure that VMs receive the required input/output performance. Bus Sharing is related to virtual device configurations in terms of how devices share a bus. vSphere HA provides high availability by automatically restarting VMs on other hosts in the cluster in case of a host failure, but it does not provide the functionality to revert configurations. This makes snapshots uniquely valuable for maintaining and