Virtualization - Answers running multiple operating systems "virtual machines" simultaneously on one
physical computer
Hypervisor - Answers Software that creates and manages virtual machines on a server or on a local
computer. Also called virtual machine manager (VMM).
Virtual Machine - Answers The apparent machine that the operating system presents to the user. The
VM appears to be a self-contained and autonomous system, but is running on a host computer.
Virtual Hard Disk (VHD) - Answers A file within the host of a VM that includes all the files and folders
that would be found on a hard disk partition.
Full Virtualization - Answers The virtual machine completely simulates a real physical host.
Partial Virtualization - Answers In partial virtualization, only some of the components of the virtual
machine are virtualized. The guest operating system use some virtual components and some real
physical hardware components in the actual device where the hypervisor is running.
Bare-Metal Virtualization - Answers OS virtualization in which the hypervisor runs directly on the host
computer's hardware and controls and monitors guest OSs. Also called a "type 1 hypervisor."
Type 2 hypervisor - Answers Software to manage virtual machines that is installed as an application in an
operating system.
snapshot - Answers a view of data at a particular moment in time
Cloud Computing - Answers use of web services to perform functions that were traditionally performed
with software on an individual computer; i.e. Flickr, Google Docs, etc.
IaaS (Infrastructure as a Service) - Answers A method that provides network resources such as for
storage and allow the client can deploy software and add network components such as firewalls.
SaaS (Software as a Service) - Answers A form of cloud computing where a firm subscribes to a third-
party software and receives a service that is delivered online.
PaaS (Platform as a Service) - Answers Cloud-based virtual server(s). These virtualized platforms give
programmers tools needed to deploy, administer, and maintain a Web application.
Private Cloud - Answers serves only one customer or organization and can be located on the customer's
premises or off the customer's premises
Public Cloud - Answers promotes massive, global, and industry wide applications offered to the general
public