You may want to enable DNS because you have DNS servers for mapping IP addresses to host names. DNS is a distributed database system for managing host names and their associated Internet Protocol (IP) addresses. Using DNS means that people can use names, such as www.jkltoys.com to locate a host, rather than using the IP address (xxx.xxx.xxx.xxx). A single server may only be responsible for knowing the host names and IP addresses for a small subset of a zone, but DNS servers can work together to map all Domain names to their IP addresses. DNS servers working together allow computers to communicate across the Internet.