(Computer network is the product of the close combination of computer technology and communication technology, and it is a necessary condition for society to move towards 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, computer technology and communication technology have achieved rapid development. Computer technology has penetrated into the field of communication technology, greatly improving the function of communication systems, and promoting the transformation of communication from analog to
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