Hostnames serve as memorable labels for the nodes, rarely changed after initial assignment. They are identified by network addresses, and may have hostnames. The nodes of a computer network can include personal computers, servers, networking hardware, or other specialised or general-purpose hosts. These interconnections are made up of telecommunication network technologies, based on physically wired, optical, and wireless radio-frequency methods that may be arranged in a variety of network topologies.
The computers use common communication protocols over digital interconnections to communicate with each other. A computer network is a set of computers sharing resources located on or provided by network nodes.
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