Media doesn't compose a network, it flows within it. As far as topologies, are you looking for theoretic type of topologies or realizations of real networks? If it is the latter you should design a business case first. In general, the layout of a network and its subnets/vlans is driven by the nature of the computers connected and the work being done.
i am a student of diploma in electronics and telecomm
can anyone suggest me projects related to the below domains:-
electrical and electronics