[ To know more about it please follow the link below.
In this project we avoid using router or any other DHCP servers. As we are not using the Ethernet adapters we cannot set any static IP address. So without the presence of external DHCP server and static IP address our both computers will get APIPA from Windows Operating System.
[ To know more about APIPA please click on the link below.
So the IP address our computers got was 169.254.X.X range. Fortunately the IP address gained by our computers were in the range 169.254.1.X and it started to communicate with each other.
It is sure that APIPA computers can communicate each other as their subnet mask is 255.255.0.0 (Class B address). So as the subnet rules says the network address of APIPA is 169.254.0.1 and the broadcast address is 169.254.255.255. Any address comes in between these range can communicate each other. Because it is a private IP address we cannot use APIPA to get Internet connection to our computers. For Local networks and Intranet APIPA is enough.