It's the other way round, 3.11 was the "predecessor" to 95 and 3.1 was full blown NT, followed by 3.51.
It doesn't matter though since MS released a TCP/IP stack for 3.11 and Windows for Workgroups. It works fine on any contemporary network.
You got things a little mixed up there alright. Windows for Work Groups 3.11 came out in 1993 to add networking support. You're probably thinking of NT 3.1 which was already a 32bit OS. WIN 3.1 came out in 1992 and was the successor to 3.0 as well as the first version to see a mouse used.