0
What else can I help you with?
Refers to the process whereby a single physical computer can support multiple operating systems.?
The process whereby a single physical computer can support multiple operating systems is known as virtualization. Virtualization allows multiple virtual machines (VMs) to run on a single hardware platform, each with its own operating system and applications. This is achieved through a hypervisor, which manages the VMs and allocates resources such as CPU, memory, and storage. It enhances resource utilization, flexibility, and isolation of different environments.
What role does a hypervisor play in managing virtual machines within an operating system environment?
A hypervisor is a software that creates and manages virtual machines within an operating system. It acts as a mediator between the physical hardware and the virtual machines, allowing multiple operating systems to run on a single physical machine. The hypervisor allocates resources, such as CPU, memory, and storage, to each virtual machine, ensuring they operate efficiently and securely.
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 is it called when one physical machine hosts multiple activities that are normally done on multiple machines?
Virtualization
Is kernel a physical part of computer?
No it is part of the Operating System
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.
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.
What does a computer process contains?
Processes are an operating system concept used to allow multiple programs to appear to run simultaneously on one computer. The operating system allocates at least one process to every program and switches periodically from running one process to another process.As a process is a concept, not a physical object, it does not actually contain anything.
Need more information on server virtualization?
Server virtualization is using software to emulate a complete server environment. It allows you to run multiple fully implemented servers on one computer. There are many approaches to virtualization that depend on the operating system that you want to use. Both linux and windows based machines are capable of running virtual servers.
What are desktop operating environments hosted virtually on a different physical computer from the one with which the user interacts?
ss
What does server virtualization mean?
Server virtualization is the masking of a servers identity. It is a software technology of computer's hardware technology. Several computers are networked together but it is as if there is only one. Only one ip address is identified.
What operating system will allow you to simultaneously run more programs than the physical memory of the computer will hold?
Any operating system that allows for "paging" or "swapping" is capable of this.
