Welcome to the ZyXEL Networking Glossary - your definitive source for descriptions of networking terms and ZyXEL's product features.
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Domain Name System
The Domain Name System (DNS) maps domain names to their corresponding IP addresses and vice versa. The DNS server is important because without it, you must know the IP address of a networking device before you can access it. Domain Name System (DNS) links names to IP addresses. When you connect to websites on the Internet you can type either the site’s IP address or its DNS name.