Solve : system administrationy?

1.	Solve : system administrationy?
Answer» hey everyone.i am the selftaught and i want to implement a fileserver and to learn how to make different servers but i have only one computer so i want to use a SIMULATOR so to be ABLE to TEST my computers on my network if are access my server.i don't know exactly which SOFTWARE i can use to simulate many computers that are relying to on server on network .can anyone help me and tell me how can i do it or give me best link where i can find more INFORMATION about the issue?

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