(Computer network technology is the product of the combination of communication technology and computer technology. A computer network is a collection of disparate, independent computers on the earth that connect to each other according to network protocols. The connecting medium can be cable, twisted pair, fiber optic, microwave, carrier wave or communication satellite. The computer network has the function of sharing hardware, software and data resources, and has the ability to manage, manage and maintain the shared data resources collectively. [)
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