Mike is a security analyst and has just removed malware from a virtual server. What feature of virtualization would he use to return the virtual server to a last known good state?

A snapshot is an image of the virtual machine (VM) at some point in time. It is standard practice to periodically take a snapshot of a virtual system so that you can return that system to a last known good state. Sandboxing is the process of isolating a system or software. The hypervisor is the mechanism through which the virtual environment interacts with the hardware, and elasticity is the ability for the system to scale.