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hello everyone my name is vijay kumar Devireddy and i am glad to have you back on my episode 34 today we are discussing about Welcome to this episode on virtualization.Up to this point in the course,we've talked about a lot of different types of hackers and malicious software that are attempting to affect our systems.Then we started talking about how you can secure your hardware.And in the last section,we discussed securing your operating system.Now, we're going to talk about how you can use virtualization to emulate your physical hardware in order for you to run an operating system in a protected and sandboxed environment. First, let's define virtualization.Virtualization is the creation of a virtual resource.Now, I know that's pretty broad,but that's because virtualization itself is a broad category.We can virtualize anything.This includes servers, desktops, file systems,hard drives, and even an entire network.The most common use of virtualization these days is the use of a virtual machine.A virtual machine is a container that contains an emulated computer that can run an entire operating system inside of it.This includes emulation of all of the hardware that's required to run the system.This means you have the hard drives, the optical drives, video cards, processors,and even the BIOS being emulated.Later in this section, I'm goingto show you in a demonstration how to install Windows 10 inside of a virtual machine that's going to be hosted on a Mac OS X-powered desktop computer.Now, there are two main types of virtual machines:System virtual machines, and processor virtual machines.A system virtual machine is a complete platform that's designed to take the place of an entire computer.That means you can run the entire operating system virtually,just like I'm going to show you with my Windows 10 example later on.A processor virtual machine on the other hand is designed to run a single application. Often, this is used to run something like a web browser or possibly even a simple web server.Virtualization is important to both the security of our on-premise and our virtual servers,because it's heavily used by both of those.Virtualization has continued to increase in recent years,helping to reduce the need for additional power,space, and cooling for our server rooms and our data centers,and thereby reducing the hysical architecture involved in supporting our IT operations.