summary<br> With the continuous development of society, computer network has become an indispensable part of people's life and production. In the operation of computer network, due to its own characteristics, there are certain security risks in the operation of computer network, these security risks can easily lead to the occurrence of computer network failure, the normal operation of computer network has a great impact. This paper briefly introduces several more common types of network failures, and discusses the specific maintenance methods and solutions in detail.<br>Keywords: computer; network failure; type of failure; maintenance method; solution;
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