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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.Open Letter to All Residents Deeply Poisoned by "Binjiang Green Energy Waste Incineration Power Plant"1. (1) When one of the two ships should generally give way to the other ship, the other ship should maintain its course and speed.请再来四杯第二季……Provides an interface for a series of objects. Q: How can it be realized? Answer: Provides abstract interfaces for multiple productsCompared with 618 last year, in just four days from June 16 to 20 this year, the sales volume of 116 Tmall smart stores in Osaka Weaving House tripled, the unit price of customers increased from 184 yuan to 310 yuan, and the number of customers increased 168%.杨长帆回答更快，我咒你全家祖坟。