Domain Name System (DNS) enables you to use hierarchical, friendly names to easily
locate computers and other resources on an IP network

DNS is a distributed database that contains mappings of DNS domain names to data.

The naming system on which DNS is based is a hierarchical and logical tree structure
called the domain namespace. Organizations can also create private networks that are
not visible on the Internet, using their own domain namespaces. Figure 5.1 shows part
of the In