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The attack uses the method of sending a large number of domain name resolution requests to the attacked server, Usually the domain name requested to be resolved is randomly generated or does not exist on the network. When the attacked DNS server receives the domain name resolution request, it will first look for whether there is a corresponding cache on the server. If it cannot be found and the domain name cannot be directly resolved by the server, the DNS server will recursively query the domain name information from its upper DNS server. The process of domain name resolution brings a great load to the server. If the number of domain name resolution requests exceeds a certain number per second, the DNS server will time out to resolve domain names.　　幸福生孩子大出血，万善堂组织村民献血，救了幸福的命，幸福万分感恩。不料，她之前寄出的举报信却引来了纪检人员，万善堂生气发病，引起村民的众怒，幸福俩口子不堪压力，进城打工。冰糖在酒中翻滚了两下，然后开始慢慢融化。爱与遗憾的套路，但是又包含笑中带泪，很治愈。　　5.「穿衣镜」本剧讲述的是以中国现代社会为大背景刻画男女主人公之间纯洁的爱情。