Orient yourself to the weatherboards you'll be working with: the board you're replacing, the board immediately above it and the one immediately below it. Call the board above the one you're replacing board A.. Board B is the board that you're replacing.
Desktop virtualization is the concept of separating the logical desktop from the physical machine. One form of desktop virtualization, virtual desktop infrastructure (VDI), can be thought of as a more advanced form of hardware virtualization.
Virtualization is a technique used to create an execution environment for software that is similar to the one it was originally designed for, but on a different hardware or operating system. Virtualization can be achieved usually at two levels: operating system virtualization and hardware virtualization.