Understanding two NICs requirement for SQL fail over cluster

I am trying to make an SQL Server 2013 fail over cluster. I have two DB machines. I understand that both machines need 2 NICs each. In my organization the IP scheme assigned is something like 192.168.1.X

So I want to know if I assign 1 IP to each NIC, will that be enough? Like assigning 192.168.1.50, 192.168.1.51, 192.168.1.52 and 192.168.1.53?

Or two of the NICs in each machine have to have some private network scheme which will allow them to communicate directly?