P2P
Peer to Peer (P2P) networking is a type of network architecture in which each machine on the network performs the tasks of a server and a client; each machine supplies and accesses each other's information. Rather than a centralized architecture in which many clients access a single server which uploads data to each client, a P2P network allows each machine to upload and download data from each other.These types of networks gained popularity during the late 1990s/early 2000s with Napster, a free P2P music sharing service. Many companies began offering a similar service, and today there are still many popular P2P networks in existence. One of the most popular modern applications of the P2P model is file sharing, which can be used to share music, videos, and software. One file sharing protocol, BitTorrent, accounts for 43% to 70% of all internet traffic. It has, on average, at any given time, more active users online than Facebook and YouTube combined.
P2P networks are also found as part of "hybrid networks," in which clients access servers for information, as in a server-client network, and servers share information with each other, as in a P2P network.
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