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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.杨长帆在哪里？有胆下船一战得一笔奖学金资助，张一鹏（刘德华）获得去法国留学深造的机会，学成归国后，他被任命为上海市禁烟（鸦片）行动的第一专员。 张在法经西方文化与价值观熏陶，十分书生意气，刚携妻子（陈少霞）来到上海，便展开一系列动作，不知中国与西方国家国情有别，难有健全的法律体系及社会秩序：警察署长倪坤（顾宝明）和大毒枭戴济民（刘松仁）是拜把兄弟，两人一起控制着包括贩卖鸦片在内的上海所有的非法交易，见数次向张行贿无果，他们发毒誓要让张生不如死。英国Sky Atlantic、法国Canal+与美国HBO联合制作影集《年轻教宗》（The Young Pope）由奥斯卡提名男星裘德洛（Jude Law）主演、奥斯卡最佳外语片《绝美之城》编导保罗索伦提诺（Paolo Sorrentino）打造，播出后获不少好评，制作人曾宣布会有第二季。不过日前拍摄计划生变，改成推出《新教宗》（The New Pope）作为续篇影集。　　仁宗年间，杨六郎延昭（高雄饰）率领宋军与辽军大战。主帅庞龙（冼灏英饰）妒忌杨家将之功名，用计拖延援兵，导致六郎战死辽境。幸而杨宗保（徐少强饰）得庞烈（吕颂贤饰）之助逃回天波府。