All language subtitles for 2_Virtual Machines

Before we start installing
our operating system,

we need to be familiar
with the concept of

virtual machines, or VMs.

A virtual machine is just
a copy of a real machine.

Why would you want that?

We've been working with
physical machines so far,

but there are cases in
IT support where we need

access to a machine that isn't
physically in front of us.

Let's say I have a
Windows machine,

and I want to learn another
operating system like Linux.

I don't want to buy
another computer,

or have two separate
operating systems on my disk.

Instead, I can use
an application

like Virtual Box
to install Linux,

and have it completely
isolated from my machine.

Virtual machines use physical
resources like memory, CPU,

and storage, but they offer

the added benefit of running

multiple operating
systems at once.

They're also easier to
maintain and provision.

Virtual machines
have become a staple

in many IT departments since

they allow IT support
specialist to

create new virtual
computers on-demand.

They can also reclaim

the resources they use when
they're no longer needed.

If you wanted to use
software that's only

available on one specific OS,

it's easier to create
a new virtual machine.

Use the software and then

delete the virtual
machines once you're done.

Throughout this program,
you'll actually be using

VMs to perform
hands-on exercises.

You'll be working on our
Quick Labs platform,

where you'll be
presented tasks to

complete from within
a lab setting.

We list out the specific
tasks you'll need to

complete and once you
complete the tasks,

you'll get the
credit for the lab.

Now that we know what
a virtual machine is,

you can see how they can
be extremely useful.