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