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                            ## 域名系統(又稱 DNS)

>對于個人電腦、服務器或連接到互聯網任何資源, 或專用網絡而言, 域名系統(DNS)是一個分層分布式命名系統, 用給每個參與的實體分配域名的方式將各種信息聯系起來, 更重要的是, 為能訪問全球的計算機服務和設備, DNS 將所需的數字 IP 地址轉變為人類容易記住的域名. DNS 是大多數互聯網服務的必要功能, 因為這是主要的 IP 地址服務. - wikipedia

![dns](https://raw.githubusercontent.com/dwqs/fedHandlebook/master/images/dns.jpg)

* [什么是 DNS](https://www.youtube.com/watch?v=72snZctFFtA) [watch]
* [DNS 是怎么工作的?](https://howdns.works/ep1/) [read]

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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