255.255.255.254⇒11111111.11111111.11111111.11111110
Above 31-Bit prefix address
number of one's in network mask represent the total no bit used in the network id
means 31 bit are used for network id and 1 bit are used for host id . so maximum no of host is 21=2.
and limited broadcast address is 255.255.255.255