Yes, they did
NO. In a true peer to peer there is no server.
Distinguish between Peer-to-Peer and server based networks
Almost all modern day operating systems support peer to peer networking, and are usually the standard network protocol after a new installation.
A peer-to-peer network is not required for have a server at all. Therefore, any peer-to-peer network could be formed without a server.
Peer-to-peer
Nope. There is no server in peer to peer networks. Only client computers connected to each other.
A peer-peer server is a computer network in which all the computers are equal, as opposed to a client-server network in which the computers get permission from an administrative computer. All computers in a peer-peer network can share and access available data freely.
It is possible that they do; the reason for this is that in a peer to peer network each workstation is responsible for their own security, backups, virus protection, etc. You can not mandate tool usage in a peer to peer network. In a client server network you can force policies to be obeyed, but not in a peer to peer network.
In a peer to peer network, all nodes are the same. In a client-server network, conversely, the server node maintains control over other nodes.
A host in a peer to peer network can offer resources to other hosts or devices in the network without being a server. If you share a printer, or a folder across the network you are sharing information or resources with other devices; in each case neither system is a server. The ability to do this is built in to most desktop client operating systems.
peer-to-peer and server-based
Two types of peer-to-peer networks exist that are:• Pure peer-to-peer Network:All Peers act as equals mean to say that there is no dedicated server, all behaves equally• Hybrid peer-to-peer Network:It act as the client¬server model because it has a central peer act as server that keeps information on peers and responds to requests for that information. Central server (peer) knows what resources are shared and what are free. They are also responsible for hosting management of available resources.