What is a virtual machine?

Could anyone help me? Thanks Guys.
Answer #1
en.wikipedia.org/wiki/Virtual_machine
A software emulation of a computer that runs in an isolated partition of a real computer; A computer system that is implemented in software …
Answer #2
For personal use, you would get virtual machines to run applications that need an older version of OS and you dont want to dual boot. Or for testing cracks/keygens. Companies use virtual machines for their servers.
VirtualBox (freeware) and Vmware Workstation(retail you have to buy it or crack it). Those are the popular virtualization softwares, install any version of Windows, Linux in them
Answer #3
For personal use, you would get virtual machines to run applications that need an older version of OS and you dont want to dual boot. Or for testing cracks/keygens. Companies use virtual machines for their servers.
VirtualBox (freeware) and Vmware Workstation(retail you have to buy it or crack it). Those are the popular virtualization softwares, install any version of Windows, Linux in them vmware being the better of the two by far.
Answer #4
Read here first
http://en.wikipedia.org/wiki/Virtual_machine
The best thing of VM is you can test certain program whether it will run or not in your system without affecting your system…