$10$ users need to download a file of size $700$Mbytes from a server with an upload rate of $100$

Mbps$.8$ of these users have end systems in enterprise networks, each one with a download

and upload rate equal to $30$Mbps$,$ while two users are connected to an ISP through DSL home

access. One of these two users pays more and has a download rate equal to $50$Mbps$,$ while the

other user has the basic service with a download rate of $5$Mbps$.$ Both the DSL users have an

upload rate of $1$Mbps$.$