Case 1

1.)
Server based, because the XYZ Corporation want their network to be easy to manage and back up. A server based is also good for many computers.

2.)
Peer-to-peer, because Widgets Inc. wants the cheapest possible solution and minimal training for employees, and because employees wants to control resources on their own machines, they cannot do it with server based network.

3.)
Combination Network, because Individual users need some control over individual resources but they also want network faxing and dial-in service at each location, they cannot do it in a server based or a peer-to-peer network. The only solution is a combination network.

4.)
Fax Servers.