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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.B. Greco-Roman wrestling: 48-54KG, 58KG, 63KG, 69KG, 76KG, 85KG, 97KG, 97-130KG.只是这些人都是欲言又止。嗯，等哪天回去把这事问娘。　　充满了冲突的校园生活就此拉开序幕，想要解决问题的赵强子自己却成为了最大的问题。在这里，赵强子需要面对的不仅仅是来自学生们的非议和压力，更在无意之中发现了学校财团那不可告人的秘密一部催眠放松剧，通过催眠影像和众星的旁白结合起来，以达到放松的效果。该剧一共10集，每集半小时