A virtual attack - is an attempt by someone over the internet to gain access to a computer's hard-drive. Any computer connected to the 'net is vulnerable to attack - which is why it's vital to have good fire-wall and virus detection programs.
No, a virtual computer is like any other computer, except you are running it on your own system, any computer can get a virus, as can a virtual machine.
Windows laptop computer refers to the operating system in the computer. This operating system is where your virtual memory, task, and files are stored.
A virtual server to host applications can be cannot be acquired. A virtual server is basically a virtual machine, which means it can be run simultaneously on the same computer. The virtual machine acts like a separate computer system though.
3 assests of computer system -hardware -software -printer
That depends on the operating system and computer architecture.
Virtual memory is hardware that the computer uses to load the operating system and run all of the programs. It is stated that the more memory that the computer has, the faster the programs will run.
James E. Smith has written: 'Virtual machines' -- subject(s): Virtual computer systems, Computer architecture, System design
An environment (created by an emulation software) where an other computer's operating system (as well as its programs) can be run.
in immersive virtual reality users use head gear and gloves to communicate to a virtual computer system usually it involves interacting with 3D objects. Desktop reality are computer simulations generated on the screen.
Virtual Machine
The salesperson obviously hasn't got a clue what virtual memory is - or you misunderstood him. Virtual memory is a system that is integral to the computer system, not something that can be added.
A computer can still operate without virtual memory (virtual memory is just hard drive space that is set aside to allow the computer to swap data to and from actual RAM). It is just that on a modern multitasking system things could slow down if you have a lot of things going on and the system is reaching its memory limit. With virtual memory turned off a system with minimal memory will tend to really slow down a lot. It may not be as bad on a system with lots of memory (like 2GB or more).