Which term denotes software that emulates a physical computer on a host and adds networking capabilities?

• A. Vmware
• B. Virtual Server
• C. Virtual Memory Manager (VMM)
• D. Virus

Answer: (A)

The key idea is virtualization: software that creates virtual machines on a real host, presenting each VM with its own virtual hardware (CPU, memory, disks, and network interfaces) and allowing those VMs to be connected to networks just like separate physical machines. VMware is a widely used example of this kind of software, enabling you to run multiple guest operating systems on one physical machine, with each VM having its own virtual network adapters and the ability to communicate over virtual switches and real networks. The other terms don’t fit as well: a Virtual Memory Manager handles memory within an OS, not full virtual machines; a virus is malicious software; and Virtual Server refers to a related concept or product line but doesn’t capture the general idea as clearly as VMware does.