A technician needs to patch a virtual machine. Which recovery principle should the technician employ to ensure recovery is possible in case of failure?

The principle of using a snapshot is particularly effective for ensuring that recovery is possible in case of failure during the patching of a virtual machine. Snapshots capture the current state of a virtual machine, including its disk files, memory, and settings at a specific point in time. This allows the technician to revert the virtual machine back to that state if something goes wrong after applying patches. If the patches cause instability or other issues, the snapshot gives a reliable reference point to rollback, thus minimizing downtime and data loss.

In a virtualized environment, snapshots are often used for quick recovery options. They provide a layer of protection that can be easily utilized during the patching process, where the outcome might be uncertain. This capability makes snapshots a preferred tool for managing changes in virtual machines effectively and securely.

The other options represent different recovery principles that may serve various purposes but do not particularly align with the need for quick and reliable recovery in the context of patching a virtual machine. Incremental recovery generally involves saving only changes since the last backup, which might not provide the complete state needed for a rollback. Bare metal recovery pertains to restoring an entire system from scratch, which usually takes longer and is more complex than needed in this scenario. Selective recovery typically involves recovering