For simplicity let's assume that we have very simple LAN. There is some router with uplink to the internet. To this router there is connected some basic 24 ports switch, and from that switch there are cables going out to few workstations in a office.
The link from the LAN to the internet is 10mbps download, 2mbps upload. If workstation1 will start downloading data from a website (client-server) with a speed of 5mbps, or 625kBps (since 5 megabits equals 625 kilobytes), will the connection for other people working in a office, on other workstations be better than in the case, where workstation1 is downloading data from torrent client, with the same speed of 5mbps, but from multiple peers, not from one source as is the case in downloading from website?
Does it have anything to do with the fact that in peer-to-peer you have multiple connections?
If in case of torrent traffic the quality of connection will be worse for other users, then how it will be worse? Will it just increase latency, or will it also worsen downloading speed, increase jitter?
And last questions, what are the ways to control side effects of people using p2p for example in small/medium office with one simple LAN?
My explanation of the question may not seem professional, but please use technical terms, I am not looking for "explain it like I am 5 years old" ;) I have quite good understanding of networking, routing, congestion control and protocols etc (at least I think so).