Peer group (computer networking)
Encyclopedia
In computer networking, a peer group is a group of functional units in the same layer (see e.g. OSI model
OSI model
The Open Systems Interconnection model is a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a prescription of characterizing and standardizing the functions of a communications system in terms of abstraction layers. Similar...

) of a network, by analogy with peer group
Peer group
A peer group is a social group consisting of humans. Peer groups are an informal primary group of people who share a similar or equal status and who are usually of roughly the same age, tended to travel around and interact within the social aggregate Members of a particular peer group often have...

. See also peer-to-peer
Peer-to-peer
Peer-to-peer computing or networking is a distributed application architecture that partitions tasks or workloads among peers. Peers are equally privileged, equipotent participants in the application...

(P2P) networking which is a specific type of networking relying on basically equal end hosts rather than on a hierarchy of devices.
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