How to Calculate the Number of Hosts on a Network. Nearly all computer networks use the Internet Protocol (IP) for addressing and communications due to the proliferation of the Internet. IP ...

A virtual machine (VM) is software that runs programs or applications without being tied to a physical machine. In a VM instance, one or more guest machines can run on a host computer.

DNS provides a network-accessible directory of IP addresses for the Internet, while the hosts file provides a local directory that is stored, for example, on a Personal Computer (PC) local hard drive.