Chapter 1Introduction
Networks are everywhere! A network is a system formed by certain entities and interactions among those entities. One example of a network as a physical system is an electrical power grid network formed by power generation sources, distribution lines, switches that control the transmission of electricity, and consumer equipments. Another popular example of a network is a computer network such as the Internet that consists of servers, clients, switches, and routers interconnected by several communication links such as optical fiber links, coaxial cables, Ethernet cables, wireless links, and satellite links. Other examples include a wide variety of physical networks such as biological networks, social networks, and technological ...
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