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Revision Date Username Comment
503 Oct 2013 - 16:05norqu036? 
403 May 2013 - 11:18NicLewis 
318 Mar 2013 - 10:43NicLewis 
225 Feb 2013 - 10:40NicLewis 
121 Feb 2013 - 09:23NicLewis 

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You are here: UMWiki>CBI_ComputerSecurity Web>Systems>SystemsVM (03 Oct 2013, norqu036)

Current Activitieslock Who is Who?lock People Programs Publications CSHW_2014 Systems Events Mechanisms



A Virtual Machine (VM) is a computer that is simulated in hardware or software on another computer. The simulated computer may be the functional representation of a real machine, or an abstract machine that does not exist outside the simulation. Simulations may run an entire operating system, as in the case of early time-sharing systems, which gave each user their own instance of an operating system on a virtualized machine, or simulations may be confined to a single program, such as the Java Virtual Machine. There are numerous reasons for operating a virtual machine, including the need to use software that only runs on an obsolete operating system or computer architecture, the need to run an OS or program that is not completely trusted, the need for complete control over the operating environment of a product under evaluation, and the need to contain a single program within a cross-platform environment, also called application virtualization.(1)(2)(3)


1 : lock Robert P. Goldberg, "Survey of Virtual Machine Research, Computer 7, no. 6 (June 1974), 34-35. (Login required)

2 : lock James E. Smith, and Ravi Nair, "The Architecture of Virtual Machines," Computer 38, no. 5 (May 2005), 32-37. (Login required)

3 : lock Iain D. Craig, Virtual Machines, London (Springer-Verlag), 27-31. (Login required)

Topic revision: r5 - 03 Oct 2013 - 16:05:15 - norqu036
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