Computer network (the network) is a system that consists of computers that are designed to be able to share resources (printers, CPUs), communication (email, instant messaging), and can access information (web browser). The purpose of the network computer is In order to achieve its objectives, every part of the network computer can ask for and provide services (service). The party requesting / receiving the service are called clients (client) and providing / sending service called the waiter (server). The design of this referred to as client-server system, and used in almost all computer network applications.
Two computers that each have a network card, then connected via a wired or wireless as a medium for data transmission, and there is a network operating system software will form a simple computer network. If you want to create a wider network of computers longer range, it would require additional equipment such as the Hub, Bridge, Switch, Router, Gateway as Interconnecting equipment.
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