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Why might an operating system on a virtual machine run slower than one installed directly on a PC?
Wiki User
∙ 10y ago
any high end database(datacenter) server, exchange server, any high end appliaction server which require dedicated physical resources will work better on physical then virtual. They will work slow on Virtual servers
Wiki User
∙ 10y ago
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What is tha advantage for an operating system of using a virtual machine?
An advantage of using a virtual machine is you can run multiple operating systems under the umbrella of one operating system. Without a virtual machine you have to reboot every time you want to want to change operating systems but with a VM you can simply switch between them.
What is a Guest Operating System?
A Guest operating system is one that runs on top of another, similar to a program. Guest operating systems are usually run in a "virtual machine", which does not interact directly with the real hardware of the computer.
What the advantage for an operating system designer of using a virtual machine?
A virtual machine will provide generic hardware that can be found in many other computers. Having a virtual machine eliminates the need to have either a second system, or to reboot to test their operating system.
Can a virus jump from a virtual machine to a host operating system if file sharing is disabled?
No
What is it called when two operating systems are installed on the same computer?
There are three main terms when referring to a computing machine without multiple operating systems (OSs). "Dual boot" OSs offer the operator a choice between them at start-up. There are also "virtual machines" in which the primary OS is running while the second is open in a separate window simultaneously. The third is a machine with a "hard partition" with both OSs installed in two separate parts of the disk.
What is tha advantage for an operating system of using a virtual machine?
An advantage of using a virtual machine is you can run multiple operating systems under the umbrella of one operating system. Without a virtual machine you have to reboot every time you want to want to change operating systems but with a VM you can simply switch between them.
What does the virtual machine software uses to interface between the host operating system and the guest operating system?
Virtual Layer
What is a Guest Operating System?
A Guest operating system is one that runs on top of another, similar to a program. Guest operating systems are usually run in a "virtual machine", which does not interact directly with the real hardware of the computer.
Why do modern machines consist of multiple levels of virtual machines?
Modern machines do not consist of multiple levels of virtual machines; that is a function of the host operating system's virtual machine manager and its guest operating systems, all of which are implemented through software. The operating system's virtual machine manager exposes one or more virtual machines upon which you can host one or more guest operating systems and their applications. In order to execute compiled Java applications upon one of these guest operating systems you will also need to install the Java virtual machine for that specific operating system. Thus you end up with a Java program executing within a Java virtual machine executing within a virtual machine executing within a virtual machine manager executing upon the physical hardware. The physical hardware itself may be optimised to handle virtual machine managers more efficiently, but the virtual machine manager is a software program; it is not part of the physical machine architecture
What the advantage for an operating system designer of using a virtual machine?
A virtual machine will provide generic hardware that can be found in many other computers. Having a virtual machine eliminates the need to have either a second system, or to reboot to test their operating system.
What does a virtual box do?
VirtualBox is software which can be installed on a computer. It allows the user to run a different operating system on the machine. This allows users to run otherwise incompatible software successfully.
Is it vmware is a virtual server?
Yes/No That answer is no because VMware's main product is a hypervisor called ESXI, this Linux-based operating system is directly installed to the computer, it then hosts other virtual computers and servers, and serves them up to the users. But the answer is also yes because VMware's main product can also be installed as a virtual machine on top of VMware's ESXI server, so it's up to the administrator whether or not it becomes a virtual server or a server that serves up virtual machines. The reason why VMware's ESX would be made into a virtual machine would be for development and experimental environments before initiating a full production environment, this is standard practice to iron out any bugs that may occur.
Can you have two operating systems on one computer?
Yes, but only one can be in control of the system. When a choice of operating systems exist, you typically choose the controlling operating system via a boot menu at startup. To switch to another operating system, you must restart the system. It is possible to run two or more operating systems at the same time via virtual machines. A virtual machine is a software program that emulates a real computer. However, operating systems within a virtual machine have no direct control over the physical machine which is always under the direct control of the one operating system chosen at startup. Virtual machine operating system calls are routed to the virtual machine software which must translate the call to invoke the appropriate system function of controlling operating system. As a result, virtual machines perform extremely poorly compared to the physical machines within which they operate.
Set up a Virtual Private Server?
form_title=Set up a Virtual Private Server form_header=A virtual private server is a separate server that's running on the same physical machine. What will you use the virtual private server for?=_ Will you need an anti-virus progam installed?= () Yes () No What operating server do you want running on the server?=_
Can a virus jump from a virtual machine to a host operating system if file sharing is disabled?
No
Why cant you use all of your systems memory to run a virtual machine?
You can't use all of your system memory to run a virtual machine because then there wouldn't be enough memory for the Operating System that's running the virtual machine to function. For instance, if you have 4 GB of system memory total, and your operating system needs at least a quarter of that (1 GB) to function, then your virtual machine maximum memory would be 3 GB.
What is the process of deploying and maintaining multiple instances of an operating system on a single computer?
A Virtual Machine.
