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Virtual machine is a software that provides a virtualised set of hardware to the guest operating system

Virtual machine is a software that provides a virtualised set of hardware to the guest operating system.

The host provides pass-through drivers for guest USB, serial, and parallel devices. In this way, virtual machines become highly portable between computers, because every host looks nearly identical to the guest. In practice, a system administrator can pause operations on a virtual machine guest, move or copy that guest to another physical computer, and there resume execution exactly at the point of suspension.

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