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                            [TOC]

## DNS
DNS( Domain Name System:域名系統)


- 域名由點、字母和數字組成
- 點分割不同的域
- 域名可以分為頂級域、二級域、三級域


## 頂級域

![](https://img.kancloud.cn/62/1b/621b1551e866980932d70e3ccaf8b905_1658x1116.png)
![](https://img.kancloud.cn/56/de/56de7bd7f1ebf6d64023cf4a7f4d6054_2260x1052.png)
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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