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===Networks=== | ===Networks=== | ||
Physically, computer networks are connected to each other non-hierarchically and do not necessarily depend on intermediaries, e.g. servers routing digital information to the end computer. | [[File:baran_net1.gif|400px|right|Fig.1. Networks. Available at: http://en.wikinoticia.com/Technology/general-technology/73667-why-is-it-possible-to- disable-the-internet (Accessed: 31 May 2015).]]Physically, computer networks are connected to each other non-hierarchically (or decentralized; see Fig.1.) and do not necessarily depend on intermediaries, e.g. servers routing digital information to the end computer. | ||
Nevertheless, computers within the computer networks are usually connected over the network switch or wireless router, in such a way forming a decentralized (and at the same time semi-hierarchical) network. In order for the computers to interact with each other, the networks are based on certain rules set across the different protocols. The Internet Protocol Suite (TCP/IP) is one of the most widely used set of protocols forming a network of interconnected computers. One of its abstraction layers, the Internet Layer, facilitates the interconnection of networks, enabling digital data flow among computers. Its Internet Protocol (IP) defines the fundamental address spaces that are then controlled by Domain Name Servers (DNS). In other words, the Internet is defined by TCP/IP and DNS (Braden 1989). | Nevertheless, computers within the computer networks are usually connected over the network switch or wireless router, in such a way forming a decentralized (and at the same time semi-hierarchical) network. In order for the computers to interact with each other, the networks are based on certain rules set across the different protocols. The Internet Protocol Suite (TCP/IP) is one of the most widely used set of protocols forming a network of interconnected computers. One of its abstraction layers, the Internet Layer, facilitates the interconnection of networks, enabling digital data flow among computers. Its Internet Protocol (IP) defines the fundamental address spaces that are then controlled by Domain Name Servers (DNS). In other words, the Internet is defined by TCP/IP and DNS (Braden 1989). | ||