I understand it now...just got out of lab
the subnet for both addresses in the two networks is:
255.255.255.248
Network ID (network 1) = 192.168.242.48
Broadcast = 192.168.242.55
port B = 192.168.242.54
Network ID (network 2) = 192.168.242.56
Broadcast = 192.168.242.63
port C = 192.168.242.62
port D = 192.168.242.57
