Hello, everyone.
so in this video we are going to see
how a user uses OSI
model into his day-to-day life.
So in this example, I'm going to show you
how Rohit is going to text his girlfriend
on Facebook.
In the background the basic Funda and
principle is OSI model
is playing a very important role to
achieve this.
So, let's see how
As we are already aware about the OSI model
that it contains the seven layers.
So, let's see this.
the first layer is the physical layer onto which
Rohit is going to turn on the computer.
The next layer is the data
link layer.
on the which
it checks for the NIC card,
which is the network interface card that if Nick
is present into the computer through which
the computer can get connected to
the internet and function.
Also it checks for the Mac
is present onto the neck or not.
Mac stands for MAC address media access
control which is a permanent address
to identify any device.
Next is the network layer.
onto which
Rohit is going to connect.
To internet using wired mode
or Wireless mode. That is Wi-Fi.
Next layer is the transport layer. So after
connecting to the Wi-Fi
Rohit is going to open up his browser
and he is going to type www.facebook.com.
The next layer is the session layer onto
this layer.
Rohit is going to log in and create a valid
session with the Facebook's server.
Next layer is the presentation layer on this
layer the server represents the
app as it is on the client side.
As the application has been developed. It will
be seen seen onto the clients add.
And that is the rohit's and the users
end.
The last layer is the application layer. So
the user runs the applications and
in the background, there are protocols been
used such as HTTP and
https any successfully sends a message to
his girlfriend.
So this was the Practical implementation of
OSI layer into our day
to day life.
So now
let's see.
What is the data flow into the OSI model?
So on the left side is the data flow that is happening
into the OSI model.
So as you can see the first layer is the physical layer into
which the data is in the form of
bits 0 1 0 1
the next layer is the data link layer onto which the
data is then converted into
the form of frames.
Next layer is the network layer.
On which internet gets connected with the
device. So in this
layer the data is further converted into
packets.
because
data is being sent between client and
server in the form of packets only.
The router also throws and transfers packet
to the devices.
The next layer is the transport layer wherein protocols
like TCP and UDP comes
in place.
And the data is converted now into segments.
The next layer is the session layer
and the data flow is in the form of data only and
then the presentation layer it is again in
the form of data and last application layer it
Still Remains the Same data.
So I hope you guys understood.
that how data flows between each
layer of OSI model
Thank you.