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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.Altitude phobia can endanger flight safety. After suffering from high-altitude phobia during the flight, the pilots felt that their flying space was infinite and vast. They and the plane were far away from the earth and flying in an infinite space. They were very small. They had a premonition that this high-altitude space was the only factor of human-computer insecurity, and only they could leave this environment quickly. Those who have experienced a high degree of fear in childhood are prone to this disease.Since it is called, as the name implies, the front section is separated like toes. Of course, this is not just for the sake of good looks. There are other functions and ideas. We will talk about them later.Group B is the same as group A;该剧的时代背景为1900年到1905年，讲述义兵的故事。虽然一直以来有很多以日据时期（1910~1945年）为背景的韩剧，但很少有以日据时期之前为背景的故事。该剧将讲述辛未洋扰（1871年）时期，乘坐军舰来到美国的一位少年以美军身份回到抛弃他的祖国朝鲜，驻扎在当地后所发生的故事。这位少年也将在朝鲜邂逅朝鲜的精神支柱：两班家的“小姐”并坠入爱河。根据地址，阿北找到了男孩阿波。阿波为阿北的勇气所折服，收留了她。经过一段时间的接触，阿北惊奇地发现阿波原来是个同性恋，根本不是自己心目中的白马王子。这时，阿北遇上了心中的白马王子――金融奇才阿祥（成龙 饰）。为了接近喜欢追求刺激的阿祥，阿北谎称自己是黑社会老大的女儿。于是，一场意想不到的经历发生了。/poke (dial)