(Let's first assume an environment. In a small enterprise, there are now 5 parts A to E, among which: A part has 10 PCs (hosts), B part 20, C part 30, D part 15 , 20 sets of E part, and then the CIO assigns a total network segment 192.168.2.0/24 to you, as ADMIN, your task is to distinguish a separate network segment for each part,)