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Operating-Systems-10CS53-unit-1-->View question

Asked On2017-05-17 09:57:46 by:pallaviaithaln

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  A virtual machine takes the layered approach to its logical conclusion. It treats hardware
and the operating system kernel as though they were all hardware
 A virtual machine provides an interface identical to the underlying bare hardware
 The operating system host creates the illusion that a process has its own processor .
 Each guest provided with a (virtual) copy of underlying computerOperator’s console.
Advantages and Disadvantages of VirtualMachines
•The virtual-machine concept provides complete protection of system resources since each
virtualmachine isisolated from all other virtual machines.This isolation, however, permits no
direct sharing of resources.
•A virtual-machine system is a perfect vehicle for operating-systems research and development.
System development is done on the virtualmachine, insteadof on a physical machineand so does
not disrupt normal system operation.
•The virtual machineconcept is difficult toimplement due to the effort required to provide
anexact duplicateto the underlying machine. 

Answerd on:2015-01-14 Answerd By:Aishwarya-shetty-s

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