Domain name resolution is a complex process that relies on a naming hierarchy to match IP addresses, both IPv4 and IPv6, to system names. DNS name resolution also supports the identification of service locations. This is how the Active Directory Domain Service (AD DS) logon process works. In fact, DNS plays an essential role in this process and because of this; services such as those provided by AD DS would simply not be possible without the DNS service. DNS has been around since the Internet was first developed and has evolved with it. Because of this, the DNS service in Windows Server 2008 can provide a number of roles.

What is the importance and roles of DNS in today's network environment? What are the security risks associated with the implementation of DNS? What are some of the challenges of using DNS in the future?