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In the process of DNS resolution, the client initiates a query request, and the DNS server may need to make additional queries to complete the resolution process and give a response, which will consume certain computing and network resources. If an attacker uses a large number of controlled hosts to continuously send resolution requests for different domain names, the cache of the DNS server will be continuously refreshed, and the failure of a large number of resolution requests to hit the cache will cause the DNS server to consume additional resources for iterative queries, which will greatly increase the resource consumption of the DNS server.100,000 Yuan Yang Yang ["In-depth Investigation" Behind Li Jiaoshou's Resignation: Baidu's Information Flow's Failure Attempt Worth Billion Yuan] Editor: Wen Shuqi　　平山有个待嫁的女儿，但他没放心上，直到遇上中学老师。老师晚年和女儿一起生活，彼此都不快乐。平山看在眼里，才开始害怕误了女儿婚期。良缘终于找到了，但女儿嫁的，却不是原来的意中人。婚宴后，平山到了酒馆，这一回，孤独的父亲醉倒了。他的任务就是为尹旭和李斯搭桥连线，让爷孙俩人相认。其实项伯此行的目的和动机，谨慎的张良还是心存一丝疑虑的。LittleFox英语启蒙之ABC入门篇。查问数次，不得结果，看来都是阿谀之辈在替他遮瞒了。