DNS

Since IP addresses in a large network or even the internet are hard to remember, the Domain Name System (DNS) provides a mechanism to resolve the IP address assigned to a domain from a DNS server. This can either be an internet DNS server resolving requests for a domain into an assigned IP address or even a local DNS server that might be part of an Active Directory infrastructure answering local name requests to find out the IP address of a company internal server and forwarding requests not known to its own database to an internet DNS server.