In this paper, the authors' comprehensive study related to network and their different types. A network is basically all of the components (hardware and software) involved in connecting computers across small and large distances. Networks are used to provide easy access to information, thus increasing productivity for users. Generally, networks are distinguished based on their geographical span. A network can be as small as distance between the user's mobile phone and its Bluetooth headphone and as large as the Internet itself, covering the whole geographical world, i.e. the Earth. Computer networking is a vital part of any organization these days.