(Computer network technology is the product of the combination of communication technology and computer technology. A computer network is a collection of scattered and independent computers on the earth that are connected 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 centrally manage and manage and maintain the shared data resources. [)
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