Often abbreviated vhost, a virtual host is a provider of Web services that include server functions and Internet connection services. A virtual host is often used by companies or individuals that do not want to purchase and maintain their own Web servers and Internet connections.
A virtual host will provide its customers with domain name registration, file storage and directory services for the files that Web page is built from, e-mail services and even Web site design and creation services if the customers want someone else to build their Web sites.
A limitation of using a virtual host is that the customer shares the Web services with all the other customers of the virtual host. If the virtual host is running multiple sites off the same server, then those sites will be competing for Web server resources. Some virtual hosting providers offer co-location services and/or allow a customer to rent dedicated servers that are allocated to serve only that one customer��s needs.
- virtual identity
In online virtual communities, such as online chat rooms or in online games, a virtual identity is one created by the human user that acts as an interface between the physical person and virtual person other users see on their computer screen.
- virtual keyboard
)A virtual keyboard is where a full-size image of a QWERTY keyboard is projected onto any surface. Touching the image of a key generates a unique electronic signal corresponding to a key’s image. Using a virtual keyboard eliminates the chance of breakage and infection transfer. Additionally virtual keyboards require no cleaning and they have no […]
- Virtual Machine
A self-contained operating environment that behaves as if it is a separate computer. For example, Java applets run in a Java virtual machine (VM) that has no access to the host operating system. This design has two advantages: System Independence: A Java application will run the same in any Java VM, regardless of the hardware […]
- virtual machine server
A virtual machine (VM) server hosts virtual machines running operating systems in one of two following modes: fully virtual: completely emulates all hardware devices paravirtual mode: does not require complete emulation of hardware devices.
- Virtual Memory
)(n.) An imaginary memory area supported by some operating systems (for example, Windows but not DOS) in conjunction with the hardware. You can think of virtual memory as an alternate set of memory addresses. Programs use these virtual addresses rather than real addresses to store instructions and data. When the program is actually executed, the […]