What is DNS delegated administration, why might you want to use it, and how do you configure it?

What will be an ideal response?

Members of the Domain Admins or Enterprise Admins group have full access to manage the DNS service, but you might want to delegate DNS administration to an employee without allowing the broader domain administrative rights these groups afford. To that end, the DnsAdmins group in Active Directory enables its members to manage the DNS server without giving them broader administrative rights. DnsAdmins is a domain local group and has no members by default. If you want users to have this group's rights and permissions, you should follow best practices by creating a global group, adding user accounts to it, and adding the global group to the DnsAdmins group.