All language subtitles for Free-CCNA-Virtualization-Cloud-Day-54-part-1-CCNA-200-301-Complete-Course_en

Welcome to Jeremy’s IT Lab. This is a free,\n

these videos, please subscribe to follow along\n

a comment, and share the video to help spread\n

help. In this video we’ll cover two main\n

mentioned in exam topic 1.2.f, on-premises\n

fundamentals (virtual machines). Although\n

because virtualization is an essential part\n

in depth about these topics, consider looking\n

AWS, Azure, and GCP, or VMware certifications\n

Here’s what we’ll cover in these videos.\n

talking about virtual servers and virtual\n

talking about its essential characteristics,\n

I’ll briefly talk about connecting to public\n

And make sure to watch until the end of the\n

Software’s ExSim for CCNA, the best practice\nexams for the CCNA.

The first topic for today is virtual severs,\n

Although Cisco is more known for their networking\n

they also offer hardware servers such as their\n

examples of Cisco UCS servers. Although Cisco\n

vendors of hardware servers include Dell EMC,\n

and IBM, but there are many other large vendors\n

see racks full of servers like these.

Before talking about virtualization, let’s\n

Before virtualization, there was a one-to-one\n

an operating system. In the diagram on the\n

hardware components there is one operating\n

In that operating system, apps providing services\n

run. Again, that is shown in the diagram.\n

web server, one for the email server, one\n

to run all servers in a single operating system\n

a good idea because if the servers aren’t\n

app could affect all of the other apps. However,\n

for multiple reasons. First, each physical\n

etc. Also the resources on each physical server,\n

are typically under-used. NIC means Network\n

server that connects to the network. This\n

But with virtualization, it looks a bit different.\n

relationship of hardware to OS, allowing multiple\n

Each instance is called a VM, virtual machine.\n

machines are running on a single physical\n

allocate the hardware resources such as CPU\n

is a VMM, virtual machine monitor. The type\n

the hardware is called a Type 1 hypervisor,\n

Microsoft Hyper-V. So, the diagram on the\n

1 hypervisor, it’s running directly on top\n

hypervisors, because they run directly on\n

them called native hypervisors. This is the\n

They are efficient because the hypervisor\n

few resources itself, leaving more for the\n

look at the other type of hypervisor, Type\n2.

Type 2 hypervisors run as a program on an\n

Examples include VMware Workstation and Oracle\n

them on your home PC or laptop, and then run\n

hardware is called the host OS, and the OS\n

diagram on the left there is a host OS running\n

And on top of the hypervisor, there are two\n

running inside. Another name for a type 2\n

type 2 hypervisors are rarely used in data\n

devices, for example if a Mac or Linux user\n

on Windows, or vice versa. In fact, for the\n

2 hypervisor and then run a virtual machine\ninside of it.

Okay, so now you know the absolute basics\n

But why should we use virtualization? I think\n

than the king of virtualization, VMware. So,\n

site. Virtualization provides partitioning,\n

on one physical machine and divide the system\n

of hardware resource under-use, which I mentioned\n

for example fault isolation. Remember I said\n

running on a single OS in a single physical\n

virtual machine, they are isolated and can’t\n

also provides encapsulation, so you can easily\n

as a regular file. Virtualization also provides\n

move any VM to any physical server. As long\n

the physical server, it doesn’t matter what\n

And here is a graphic, again from VMware.\n

because you need fewer physical servers, as\n

physical servers means less space, power,\n

work to set up, which is another reduction\n

or eliminated because it’s easy to deploy\n

VMs also provide increased productivity, efficiency,\n

a bunch of buzzwords and I’m not going to\n

definitely more efficient and agile compared\n

is also a big benefit. It’s much quicker\n

to order a new physical server, order the\n

the rack, connect the cables, configure it,\netc.

Now, regarding virtual networks I’m just\n

to each other and to the external network,\n

to each other and the external network via\n

The hypervisor will provide a virtual switch\n

virtual switch on the hypervisor, for example.\n

interfaces can run as access or trunk ports\n

2. Notice that, in this example, two of the\n

Interfaces on the virtual switch then connect\n

to communicate with the external network.\n

NICs of the server and the physical switches.\n

form a portchannel to two separate physical\n

you have to know for the CCNA, I just wanted\n

in data centers. Okay, that’s all about\n

a huge topic in modern day IT, and although\n

you definitely do have to know about it.

So let’s finally get into cloud. Traditional\n

of the following. First, on-premises. This\n

other infrastructure are located on company\n

firewalls, web servers, database servers,\n

by the company using it, and they are also\n

required for the devices. Another option is\n

for customers to put their infrastructure,\n

Of course, devices such as desktops, wireless\n

building, but servers and most network infrastructure\n

data center provides the space, electricity,\n

In addition to that, they provide the physical\n

etc are still the responsibility of the end\n

the customer’s premises. So, traditionally\n

of on-premises and colocation. But cloud services\n

nowadays, and is continuing to grow. Now,\n

providers such as AWS. And although this is\n

not the only one. So, let’s look at what\n

The American NIST, national institute of standards\n

special publication 800-145. It’s free to\n

PDF is 7 pages but the actual content is only\n

Actually, for this part of the video I’ll\n

a bit more explanation. First, here is the\n

computing is a model for enabling ubiquitous,\n

shared pool of configurable computing resources\n

and services) that can be rapidly provisioned\n

or service provider interaction. This cloud\n

three service models, and four deployment\n

to read it slowly, it’s important. Now,\n

understand what the cloud is, let’s look\n

five essential characteristics, the three\n

of cloud. Basically, these are what Cisco\n

exam. You don’t need to know about specific\n

If you have a basic understanding of these\n

models, and four deployment models, you’ll\nbe set.

These are the five essential characteristics\n

of these characteristics, but not all, it\n

service. The characteristics are On-demand\n

pooling, rapid elasticity, and measured service.\n

First, on-demand self-service. Here is the\n

provision computing capabilities, such as\n

automatically without requiring human interaction\n

is able to use the service, or stop using\n

without directly interacting with the service\n

AWS, Amazon Web Services, you don’t have\n

for 5 virtual servers, send them the payment\n

You login to the web portal and do it all\n

Next, broad network access. Here’s the NIST’s\n

over the network and accessed through standard\n

thin or thick client platforms (e.g., mobile\n

So, the service is available through standard\n

or private WAN connections, and can be accessed\n

AWS again, you can access their web portal\n

connects to the internet. And if you provision\n

it over the Internet or through a variety\nof other WAN options.

Next, resource pooling. ‘The provider’s\n

consumers using a multi-tenant model, with\n

assigned and reassigned according to consumer\n

in that the customer generally has no control\n

provided resources but may be able to specify\n

(e.g., country, state, or datacenter). Examples\n

memory, and network bandwidth.’ To summarize,\n

provider, and when a customer requests a service,\n

to fulfill that request are allocated from\n

they have tons of storage drives, servers\n

pool of resources used by AWS customers. When\n

Next is rapid elasticity. ‘Capabilities\n

in some cases automatically, to scale rapidly\n

To the consumer, the capabilities available\n

and can be appropriated in any quantity at\n

expand the services they use in the cloud,\n

from a pool of resources that appears to be\n

right now, AWS isn’t going to tell you ‘sorry,\n

do that.’ Of course, the resource pool isn’t\n

appear infinite to the customer. And in addition\n

a customer should be able to quickly reduce\n

Here’s the last of the five essential characteristics,\n

control and optimize resource use by leveraging\n

appropriate to the type of service (e.g.,\n

user accounts). Resource usage can be monitored,\n

for both the provider and consumer of the\n

provider measures the customer’s usage of\n

their own use as well. A customer should never\n

month, because their usage is clearly visible\n

based on usage, for example X dollars per\n

Okay, those are the five essential characteristics\n

broad network access, resource pooling, rapid\n

should have a basic understanding of these\nfor the CCNA.

Next, the three service models of cloud. In\n

a service model. For example, rather than\n

it on a rack, installing the hypervisor, creating\n

all of this as a service. There are a variety\n

service, something a a s. The three main service\n

NIST are software as a service (SaaS), platform\n

a service (IaaS). Let’s look at each one.

First, software as a service, SaaS. As defined\n

the consumer is to use the provider’s applications\n

are accessible from various client devices\n

as a web browser (e.g., web-based email),\n

not manage or control the underlying cloud\n

operating systems, storage, or even individual\n

exception of limited user-specific application\n

365 is a popular example of SaaS. It’s Microsoft\n

over Microsoft’s cloud infrastructure. But\n

G Suite which includes Gmail. This image from\n

you’re using software as a service, the\n

everything, from the physical data center,\n

servers, the operating systems on the servers,\n

and the applications themselves. The end user,\n

for example Excel running on Office 365 as\n

Next is Platform as a Service, PaaS. As defined\n

the consumer is to deploy onto the cloud infrastructure\n

created using programming languages, libraries,\n

The consumer does not manage or control the\n

network, servers, operating systems, or storage,\n

and possibly configuration settings for the\n

the service provider offers a platform for\n

example AWS Lambda and Google App Engine are\n

the service provider is in control of the\n

the servers and storage, and operating systems\n

on the operating systems. This provides a\n

their own applications, so notice that the\n

diagram are not included within the scope\n

Finally there is infrastructure as a service,\n

provided to the consumer is to provision processing,\n

resources where the consumer is able to deploy\n

operating systems and applications. The consumer\n

cloud infrastructure but has control over\n

and possibly limited control of select networking\n

examples I mentioned making VMs on AWS. Well,\n

services include Amazon EC2 and Google Compute\n

of the physical data center, the network and\n

This provides infrastructure that the customer\n

So, IaaS offers the most control to the customer.\n

So, here are those three service models of\n

Service, Platform as a Service, and Infrastructure\n

of other kinds of ‘something’ as a service,\n

Now let’s look at the final group of concepts,\n

people assume that cloud means public cloud\n

it is true that this is the most common cloud\n

Here are the four deployment models of cloud\n

hybrid. Let’s examine each one.

First up, private cloud. According to the\n

for exclusive use by a single organization\n

units). It may be owned, managed, and operated\n

combination of them, and it may exist on or\n

only used by large enterprises, or government\n

meaning exclusively used by a single organization,\n

AWS provides private cloud services for the\n

is Amazon’s, but it’s reserved for use\n

premises. This is important. Many people assume\n

but that is not always the case. In a private\n

as in public clouds, software, platform, and\n

that forms the cloud is reserved for a single\norganization.

Next, community cloud. According to the NIST,\n

for exclusive use by a specific community\n

shared concerns (e.g., mission, security requirements,\n

may be owned, managed, and operated by one\n

a third party, or some combination of them,\n

is the least common cloud deployment. It’s\n

is reserved for use by only a specific group\nof organizations.

Now we have the most popular one, public cloud.\n

is provisioned for open use by the general\n

by a business, academic, or government organization,\n

the premises of the cloud provider. This is\n

are some popular public cloud providers. AWS,\n

popular public cloud services, although AWS\n

Finally we have hybrid cloud. According to\n

composition of two or more distinct cloud\n

that remain unique entities, but are bound\n

that enables data and application portability\n

clouds).’ So, this is basically any combination\n

than a totally unique kind of cloud deployment.\n

to a public cloud when necessary due to resource\nrestrictions.

Okay, here’s a summary of the four deployment\n

cloud, and hybrid cloud. Make sure you know\n

So, we covered a lot of concepts about the\n

Keep in mind that the NIST definition of cloud\n

and cloud computing is an always-evolving\n

outlined in the document are the foundational\n

true today. So, as I said before you should\n

characteristics, three service models, and\n

Now, I introduced a lot of cloud concepts\n

of using the cloud, but let me briefly introduce\n

capital expenses, of buying hardware and software,\n

eliminated when using the cloud. Now, instead\n

meaning regular small costs instead of one-time\n

provides an overall cost reduction, although\n

Cloud services are also very easy to scale\n

set up and offered to customers from a geographic\n

virtual server in AWS, for example, you can\n

within the country, which can provide better\n

Cloud services also offer speed and agility.\n

on demand and vast amounts of resources can\n

can also be improved. Cloud services remove\n

as procuring physical servers, racking them,\n

systems, etc. This can also further lead to\n

Backups in the cloud are very easy, and data\n

different geographic locations to support\n

okay because there’s a copy somewhere else.\n

the cloud, keep in mind that it doesn’t\n

Most companies these days use a combination\n

public cloud. So, think of this as a partial\n

list of absolute benefits. A company shouldn’t\n

these days. They should weight the benefits\n

Finally, let me briefly introduce how an enterprise\n

a public cloud. Since we already covered WAN\n

be very brief. I just want to point out that\n

to their resources on a public cloud. For\n

MPLS VPN. Another option is to simply connect\n

and easy, but of course connecting through\n

WAN connection. So, a VPN can be used to provide\n

resources on the cloud. Okay, that’s all\n

Just be aware that, since these resources\n

to just set up the apps and servers. You also\n

to them. And just like regular WAN connections,\n

Having a single point of failure which can\n

Okay, before moving on to the quiz let’s\n

virtualization, including Type 1 and Type\n

servers, but briefly mentioned how virtual\n

VMs and to the external network. Then I introduced\n

essential characteristics, service models,\n

Those are the fundamentals of the cloud that\n

Finally I briefly introduced how to connect\n

introduced in the previous video can also\n

Make sure to watch until the end of the quiz\n

ExSim for CCNA, the best practice exams for\n

Which statement about virtual machines is\n

Okay, the answer is A, the hypervisor is used\n

to VMs. This is the main role of the hypervisor.\n

Type 2 hypervisors run on a host OS, and type\n

And many VMs can exist on a single physical\n

Which of the following hypervisor types is\n

now to select the best answer.

Okay, the answer is A, Type 1. Type 1 hypervisors\n

2 hypervisors are known as hosted hypervisors.\n

not as a widely accepted term. Okay, let’s\ngo to question 3.

Which of the following is NOT an essential\n

video now to select the answer.

Okay, the answer is D, infinite resource pool.\n

to expand their resources so that it appears\n

it is of course not infinite. The other options\n

computing. The only one missing is on-demand\n

Which of the following cloud service types\n

on the provider’s cloud infrastructure?\n

Okay, the answer is C, SaaS, software as a\n

PaaS, and IaaS. In SaaS, the provider provides\n

all the way to the app itself, and the customer\n

Which of the following cloud deployment types\n

Okay, the answer is D, all of the above. Whether\n

a hybrid, they all can and, and usually do,\n

cloud doesn’t always mean off premises.\n

within a building owned or operated by the\n

is much more common for cloud deployments,\n

that’s all for the quiz. Now let’s take a look at a bonus question