Primary vs Secondary DNS Server
| Primary | Secondary | |
|---|---|---|
| Nature | Read/write copy of the DNS Database | Read only copy of DNS Database | 
| Tasks | New DNS Records can be added | Not possible | 
| Updates | Can be done directly | Takes the updates from primary | 
| Zone | Single | 255 | 
| Also called | Master server | Slave server | 
To know the working watch the video

 
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