# What's DNS

##### Tutorials

- [What is Round-Robin DNS? - GreenCloud](https://blog.greencloudvps.com/what-is-round-robin-dns.php)
- [What is a DNS Amplification Attack? - GreenCloud](https://blog.greencloudvps.com/what-is-a-dns-amplification-attack.php)
- [DNS Failover: How does it work? - GreenCloud](https://blog.greencloudvps.com/dns-failover-how-does-it-work.php)

##### How DNS Works

[![how_dns_works.jpg](https://osslab.tw/uploads/images/gallery/2023-12/scaled-1680-/how-dns-works.jpg)](https://osslab.tw/uploads/images/gallery/2023-12/how-dns-works.jpg)

[![how_dns_works_2.jpg](https://osslab.tw/uploads/images/gallery/2024-02/scaled-1680-/how-dns-works-2.jpg)](https://osslab.tw/uploads/images/gallery/2024-02/how-dns-works-2.jpg)

##### DNS Record Type

[![dns_record_type.jpg](https://osslab.tw/uploads/images/gallery/2023-11/scaled-1680-/dns-record-type.jpg)](https://osslab.tw/uploads/images/gallery/2023-11/dns-record-type.jpg)