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等游累了，就不再用力，只轻轻地划拉，顺水漂游。怎么又是张家。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.在上午九点钟，《大明将军》出演小太监。来此河朔草原的消息已经早一日送进了太原城。Chapter 29Resource consumption class is a typical DDoS attack, the most representative include: Syn Flood, Ack Flood, UDP Flood. The target of this kind of attack is very simple, that is, to consume normal bandwidth and the ability of protocol stack to process resources through a large number of requests, thus achieving the purpose that the server cannot work normally.