(Computer network is a product that closely combines computer technology and communication technology. It is a necessary condition for society to step forward to informatization. It provides excellent conditions for large-scale information exchange and resource sharing, and has become the foundation of today's global information industry. . In recent years, both computer technology and communication technology have achieved rapid development. Computer technology has penetrated into the field of communication technology, greatly improving the function of the communication system, and promoting the transition from analog to
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