-: In the last video, we talked about network geography. 2 2
And so you may be wondering why am I sitting in my car? 3 3
Well, the reason I am is because my car has an example 4 4
of three of those network geographies all located 5 5
in one vehicle. 6 6
So let's talk about the PAN, the LAN, and the WAN a bit. 7 7
First, we have the PAN, 8 8
and this is going to be the connection 9 9
between my Bluetooth cell phone and my car stereo. 10 10
This is going to go just a couple of feet, 11 11
basically within the area around my person 12 12
or within the vehicle, 13 13
and that might be something like five feet 14 14
or 10-feet worth of distance. 15 15
Next, we have the LAN. 16 16
My car actually has the ability to connect over Wi-Fi. 17 17
So when I pull the car into the garage, 18 18
it connects back to my home network over Wi-Fi, 19 19
and that way it can get software updates 20 20
or anything else it needs over that local area network. 21 21
Lastly, I have a WAN connection in this car. 22 22
When I'm out and about in town, 23 23
I actually am able to connect through a cellular modem 24 24
that's built into the car out to the internet. 25 25
This way I can get traffic updates, 26 26
I can get streaming media like radio and music, 27 27
and other things while I'm out and on the go. 28 28
This car ends up having a PAN, a LAN and a WAN, 29 29
and you can see how these areas of network geography 30 30
are all focused on how big something is 31 31
or how little it is 32 32
with the PAN being the distance within the car, 33 33
the LAN being the distance between the car and the house, 34 34
and then the WAN, 35 35
which is the distance from the car 36 36
all the way out across the world.