what is DNS

Domain Name System (DNS) is a Service or Server, an Internet service that translates domain names into IP addresses.

Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. Domain Name System (DNS) the primarymeans of name resolution in Active Directory and on major TCP/IP networks such as the internet.

Concepts of DNS such as

• DNS namespace
• DNS query
  
• DNS zones
• DNS server
• DNS records
• DNS resolvers
• DNS server cache
• DNS round robin