What is Virtual Machine

A software implementation of a computer that executes programs like a physical machine.

A guest machine that is capable of sharing the same physical hardware with another guest machine and runs on a hypervisor.

Self contained operating environment that behaves as a separate computer but hosted on a host OS. The VM has no access to the host OS thus both entities exhibit separate behavior.

Virtual computer environment implemented as a software abstraction layer

A guest system with a set of abstract hardware, including virtual memory, virtual network adapters, and virtual disks.

A software implementation of a machine (computer) that executes programs like a real machine

software implementation of a computer architecture.

Special environment which imitates some particular configuration of a real computer.

A machine built by software with specific properties, and hides the hardware machine from the user.

One computer containing multiple operating (heterogeneous or homogeneous) systems loaded on a single PC. Each of which functions as a separate OS on a separate physical machine. Virtualization software does just that by creating and managing one or more virtual machines on a single, physical host PC. It can run its own operating systems and applications as if it were a physical computer. A virtual machine behaves exactly like a physical computer and contains it own virtualized CPU, RAM hard disk and network interface card (NIC) (Agarwal, A., and Raina, S. (2012) AU31: The in-text citation "Raina, S. (2012)" is not in the reference list. Please correct the citation, add the reference to the list, or delete the citation. . Virtual machine provides a complete system platform which supports the execution of a complete operating system (OS). It delivers on demand scalable computing infrastructure when you need to quickly provision resources to meet your growing need. Example of virtual machine is java applet which runs on java virtual machine that has no access to host operating system. It has two major advantages (i)System Independence- A java application will run the same in any java Virtual machine regardless of hardware, software underlying the system. (ii)Security- Virtual machine has no contact with operating System. There is little probability of demanding other application.

It is a program or operating system. It provides an environment that is not physically existent but resides into another environment. The virtual machine is known as guest, on the other hand the environment in which the virtual machine resides is known as guest. It is often used to create an environment different from the host environment. It emulates a computer system. Specialized hardware, software or both may be required for implementation of virtual machine (VM).

An emulation of a computer system. Virtual machines provide the functions of a physical machine. They may use special hardware or software to enhance their performance.

A computer instance that uses software instead of hardware to run programs and applications.

A number of discrete identical execution environments on a single computer, each of which runs an operating system (OS). This can allow applications written for one OS to be executed on a machine which runs a different OS, or provide execution “sandboxes” which provide a greater level of isolation between processes than is achieved when running multiple processes on the same instance of an OS.

An instance of a guest operating system running on a host machine.