精品国产AV网站

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.祈祷过后，德布拉甘萨很快从悲伤的情绪中抽离出来：那么，对方是放弃谈判了。大苞谷忽然冷笑起来。4月6日媒体见面会 (3张)And what Wang Zeduan said about him, Liu Guangyuan, who provided oral memories earlier, He was the only survivor of the four soldiers who had rebuilt the minefield at that time. In the memory just now, He has been blaming himself for running back alone as the first-line witness of that year but failing to save his comrades. At that point, I choked up several times and couldn't speak, and asked that I didn't want to think more about the events of that year. I respected his request, so I didn't urge him to ask, and I didn't record the information about this period of history from Liu Guangyuan's perspective. It was still regrettable from my heart, but fortunately, Wang Zeduan's memory filled the gap to a large extent.2.1 Elimination of waste