Zachary

DNS is a Domain Name System (DNS) that provides a hierarchical resolution of hostnames to IP addresses. It is used to locate resources on the Internet, such as websites, e-mail addresses, and IP addresses.

A DNS server is a computer that holds the DNS records for a domain name. A DNS server can also provide other DNS services, such as dynamic update of DNS records.

A domain controller is a computer that holds the DNS records for a domain. A domain controller also provides other DNS services, such as zone transfers and DNS name resolution.

A domain controller is typically a more powerful computer than a DNS server. A domain controller is also typically a member of a domain authentication service.