what is DNS

• DNS is a distributed database that is the default naming system for IP-based networks. DNS names are user-friendly, which means that they are easier to remember than IP addresses.
• DNS names remain more constant than IP addresses.
• DNS is used to resolve computer names to an IP address and to locate computers within local networks as well as on the Internet.
• Host names refer to specific computers on the Internet or a private network. A host name is the leftmost portion of a fully qualified domain name (FQDN), which describe the exact position of a host within the domain hierarchy (Example: www.menewtoworld.com).