1Introduction to Network Routing
1.1 Introduction to Networks
A computer network supports data communication between two or more devices over a transmission medium. The transmission medium can either be wired or wireless. The network is established and data is transmitted over it with the support of networking hardware and the software running on the hardware. Network hardware comprises equipment that generates the signal at the source, transmits the signal over the transmission medium, and receives and processes the signal at the destination. The software comprises protocols, standards, instructions, and algorithms that support transmission services over the network. The essentiality of networks has increased over time, along with advancement in network hardware, software, and support applications. There are huge variations in the size of a network in use; there can be small networks confined to an office or home, and at the same time there are networks spread across cities and countries. The spread of the network can be described in various terms, such as distance covered and the number of computers and other resources connected to the network. A local area network confined to ...
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