10 - Virtualization

Physical machine

(also known as the host operating system) has the actual hardware in place on the machine, such as the hard disk drive(s), optical drive, RAM, motherboard, etc.

VMware Workstation and ESX

A commonly used hypervisor example

Abstraction

Abstracting a virtual machine one layer higher in the system architecture than the host operating system and hardware for security purposes.

Paravirtualization

Method of virtualization requires significant modification to the guest operating system

Virtualization

The ability to install and run multiple operating systems concurrently on a single physical machine.

Virtual Hard Disk (VHD)

This is a file that is created within the host operating system and that simulates a hard disk for the virtual machine.

Snapshots

This virtualization technology allows you to clone a virtual machine, allow the machine to be copied once, or multiple times, for testing

full virtualization

What type of virtualization completely simulates a real physical host?

Hypervisor

Which term describes the layer of software that resides between the virtual OS and the physical hardware it is running on in a visualization environment?

Virtual machine

Which term refers to a software implementation of a computer system that executes programs like a physical machine as a self-contained and autonomous system?

Isolation

operating a virtual machine in a sandbox environment

Components managed by a hypervisor.

• CPU • Storage • RAM