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When you use Sun VirtualBox does the operating system use your real RAM or something else?
VirtualBox runs the operating system just like an application on your host operating system. When you give your guest operating system 512 MB of RAM, it appears as though a program is using 512 MB of RAM on your host. For this reason, you can never specify more RAM than you actually have installed, and for stability reasons, you should never specify more than half of your RAM for the guest.
Can Sun VirtualBox run Ubuntu Server Edition?
Yes. The environment provided by VirtualBox is completely compatible with Ubuntu Server. However, without advanced configuration (which is not possible from the VirtualBox GUI), you cannot access any services hosted on the virtual machine from another computer or the host operating system.
What is the default host key shortcut for VirtualBox?
On windows - Right CTRL
How do you use USB in Fedora in a virtual machine?
The only virtual machine that currently support USB passthrough to allow a guest operating system to use a USB device connected to the host is VirtualBox.
Which RAM does any OS in VirtualBox use Does VirtualBox create a virtual memory or use the same RAM of the host computerfor e.g if I have 8 gb RAM in my system, and I have assigned 4 gb RAM in virtualBox to other OS, then will it use systems RAM?
VirtualBox doesn’t have a virtual memory. Instead, it creates a virtual hard drive as a file in your file system, and when it boots up the virtual machine, it loads the entire virtual machine into RAM. This is the same way VirtualPC used to operate. The difference is that VirtualPC did things a bit differently. When you installed Windows on a VirtualPC machine, you were actually installing the entire operating system into a virtual hard drive file. It then used the same RAM you gave it to actually load the operating system into RAM. The virtual hard drive file was quite large, and when your computer rebooted, it had to reload the entire operating system again. VirtualBox is different in that it only loads the operating system into RAM when you actually boot up the virtual machine. This means that you don’t need to leave 4 gb of RAM free when you boot up Windows XP, or whatever else you’re running in VirtualBox. It also means that if you reboot your computer, you don’t have to wait for VirtualBox to load your operating system again. It eliminates the lag time that VirtualPC was notorious for.
What is a virutal machine?
A virtual machine is a physical device emulated in software. In current computing references, this means any given software that allows you to run guest operating systems on a given host (e.g. running Windows on a Macintosh computer while being able to use both operating systems at the same time using Parallels or running Windows 95 on Windows 8.1 at the same time using Oracle VirtualBox, QEMU, VMWare, or Microsoft Virtual PC).
What is the relationship between guest operating system and host operating system?
These terms are typically only applied in cases where a virtual machine is in use (a computer program that emulates a physical computer), popular examples include VMware, VirtualBox and user-mode Linux. In this case the "host" operating system is running on the physical computer and the "guest" operating system is running in the emulation software. For example I have a workstation running Debian Linux as a host operating system. When I want to compile a program for several versions of windows I can launch several instances of VirtualBox to bring up virtual machines running Windows XP, Vista and Windows 7 in both 32 and 64 bit versions as guest operating systems. This lets me easily compile the program with optimizations for each of these operating systems using a single workstation and without rebooting. Virtual machines are also common in web hosting. There are a number of hosting service providers who's business model consists entirely of selling access to user-mode Linux virtual machines. In this case the Linux guest operating system is actually running in a virtual machine under a Linux host operating system, the benefit of using virtual machines is that each customer may be given complete control over their virtual server, while the hosting company can run hundreds or even thousands of virtual servers from a handful of physical computer systems.
How do you press ctrl plus alt plus del in sun virtualbox if you what to start windows servers 2003 installed in it?
VirtualBox uses what is called a "Host key" to send specific signals to the host or guest. This is usually the right control key, though this can be changed. To send a Ctrl-Alt-Del to your guest system without disrupting your host, press the Host key + Del.
Computers running specialized operating systems that enable them to host webpages and other information are called?
Web servers
Can you connect a scanner as network scanner?
Based on the Host systems Operating System and the printers and operating systems capabilities most modern and older printers can be shared to the network with print sharing services or a host base print server.
What does a wintel server do?
Wintel is a software product. The purpose and function of Wintel is to allow host operating systems to run in a protected format.
What is the relationship between a guest operating system and a host operating system in a system like VMware what factors need to be considered in choosing the host operating system?
A host operating system is the operating system that is in direct communication with the hardware. It has direct hardware access to kernel mode and all of the devices on the physical machine. The guest operating system runs on top of a virtualization layer and all of the physical devices are virtualized. A host operating system should be as modular and thin as possible to allow the virtualization of the hardware to be as close to the physical hardware as possible, and so that dependencies that exist in the host operating don't restrict operation in the guest operating system.
