The Internet Started As A Pet

The internet started as a pet-project of the defence-Advanced research project agency (DARPA) to develop an American Defence Network. This Network was called advanced research project agency (ARPANET). The internet is an internal network of computers linked up to exchange information. Internet is a contraction of international and network. Which is a large set of computer networks that communicate with each other; often over telephone lines. This international network consists of computers permanently joined together through high speed connections. Thus there are (LAN & WAN) for dispersal of connected computers. WAN: - wide area network is a network in which computers & devices connected to the networks are geographically far apart from one another. Since the computers are far apart, connections are done with telephone lines, satellite transmission dishes & micro waves. Transmission facilities are used to link computers. Some of the devices are:- modulators & Demodulators (MODEMS) and multiplexers MODEMS are devices for converting data or information into a form for transmission through communication lines used in computer networks (modulator aspect) and also reconverting transmitted signals from transmissible forms to computer understandable forms (demodulator aspect). Multiplexer stream lines information from the communication device. It joins together the signals & sends them to the CPU. Many wide area networks (WAN) can be linked together to obtain an inter-network of networks. Also a single computer or local area network (LAN) can be linked to this inter-network of networks today, inter-network of networks have webbed the whole world into a global communication village and is termed Internet. By this companies, organizations, individuals, schools etc can share information across the world. Recent technology developments show that with an internet decoder called net box, one can access the internet through ordinary television sets. The linking of devices, computers, LANS, WANS to obtain internet work of networks could be by the use of three devices / mechanisms: - Bridge, Router, Gateway Bridge: inter-connects networks of same transmission protocol through same medium & close network & devices. Router: has higher performance they inter-connect network of different transmission media & could be far apart geographically. Gateway: has the greatest capabilities, it’s able to do the work of router and can convert protocols to suite inter-connected networks differing protocols. With gate way, different LANS, WANS or a mixture LANS & WANS can be inter-connected to different computer systems and devices.