And there again, and though, what are going to see the use of applications and services here we have
the lines of service.
Server model is one, the client is directly connected with the server.
And basically, we are going to ask this question What is it, sir?
Well, typically it is a computer.
Even in the interface is like a computer that contains information to share with the client system,
for example, what pages, documents, database images, videos, files and audio files.
It can be all stored on a server and transmitted to customers in other places, for example, a network
printer.
The the prison service for the client, Brent requested to the specified printer in a client service
network, the nurse and the servers servers run a service or a process sometimes called a service human
demon or demons are listening, listening to requests.
From the customer, when demand here, here's a request from a client, it exceeds the appropriate,
appropriate messages with the requesting client.
As you can see, by the way, in the very detailed information about network and is I'm going to put
in every single chapter a billion word.
Then we have the services and protocols.
A single application can really add on can rely on many applications and services.
In addition, service servers typically have multiple clients requesting information or information
at the same time.
So.
What we use a peer to peer model in peer to peer networking.
Peer to peer, at least two computers are connected via a network and can share resources without having
dedicated server.
I'm gonna give you an example.
We have an example here.
We have ten computers.
They are connected with the switch and the one computer is connected with the eight device, which is
a printer.
This is a logo of a printer in Cisco Packet Tracer.
How can Canada going, by the way, here we have a computer, and at the same time, it is a server
of the printing.
Here we have the this client computer is sending the message to the server of that printing, and it
will print the the the following a request from the client.
And also we year.
As you can see, it's connected final device named to Pier one to.
Can operate as a server or as a client, as I said.
What do we have here?
The server of Brent and the other clients?
Then we have the DNA service and protocol.
What is Dennis?
What does it mean?
It is very interesting.
Server and protocol.
It is for resolution name resolution.
You will say, what is the resolution?
I will give you more detailed explanation that we have here.
So basically, we have this.
This photo right here and we have here a cloud that means network we have here, Cisco, that gum server,
the server client and where this when we as a human we remember means more than remember numbers, right?
Basically, I'm gonna give you you as an example.
You remember the first and last name of your friend.
Of your dearest friend, maybe I can see your best friend or a contract worker, a co-worker, I don't
know.
But can you remember their phone number, their cell phone number?
No, you can't.
It's very hard to hear every person on the phone with.
Computers are the opposite.
You can no names, they only know numbers because it's no.
Here are translated to white the zeros and ones.
Got me, so since computers don't understand means, what are we going to offer them numbers?
And now this is the part of the service, the D.A., the D.A..
It will translate or transform the.
The name that you give to the member that is convenient with it.
So if I wrote Google.com, for example, if I wrote Google Dot Com.
In that in that moment, did you see it took maybe quite long?
It gave us a request to the DNS server so it can transfer it to their IP address so it can give me the
page that I want because basically, if I wrote it that his IP address, its IP address, maybe it will
be sooner.
And I don't know.
I don't remember the IP address of Google.
Maybe it is eight eight eight eight eight.
I don't really remember the IP address off of Google, I don't know, IP address.
I am here giving you examples.
U.S. law.
Yes, they're there.
Oh, we have it here.
Google maintains the IP address eight, eight, eight and eight four four as the primary and secondary
DNS addresses.
We have it also here.
So it isn't that great that they are going to give it aid that aid that for that for.
Yep.
No, no.
It should give me.
I don't know why it doesn't for me, because I'm not on.
I don't know why it doesn't work, basically, if I gave it a IP address to give me the answer of the
IP address.
By the way, if everyone put this IP address in their computer, it will give them the interface of
their telecommunication provider, which is 198, 168 164 164.
And.
192.168.1.1, it will give us the the interface of the telecommunication provider that we use, right?
And by the way.
Always, always, we have the first.
A host of the the router IP address, and we always use I don't know.
I'm not using Google Chrome.
I'm going to use Google Chrome here, so it can be more reliable.
So I said always, always in network, and we use one for, uh, for the Iran to address and reuse 250
for for the.
Server address.
It is full of security and stuff like that.
All right.
Now let us see you in the next part.