Domain Naming System (DNS)

Domain Naming System (DNS): Domain Naming System is used for name resolution. It converts computer name into an IP address. It was introduced along with the Windows server 2000. Windows Internet Naming Service (WINS) concept used in earlier operating system windows NT. WINS is also used for name resolution purpose. But it converts Network Basic Input/output System (NETBIOS) into an IP address.
What is NETBIOS? Its name of a computer is the name assigned to a computer during installation.
DNS USED IN ACTIVE DIRECTORY: Active Directory was introduced along with the Windows server 2000. Active Directory much familiarized in Windows server 2003. Windows server 2003 was mainly designed for server operating system. Microsoft merged Active Directory and Domain naming system for name resolution purpose called it as Active directory Integrated Zone. Active Directory Integrated Zone has many advantages. There are
*Automatic updating between Domain Naming System (DNS)
*DNS records can only be changed by authorized user
*Changes can be made on any DNS server and those changes will be replicated to other DNS server
*Security for dynamic updates by using IPSEC protocol (IP security protocol).
ADDITIONAL INFORMATION:
Zone concepts included in Active Directory. It has many advantages for handle the domain. Here three Zones included Primary, Secondary, and Stub Zone.
PRIMARY ZONE:
It is database of Active Directory. It contains all the records of the domain. It is readable and writable Zone of the Active Directory.
SECONDARY ZONE:
It is copy of primary zone. It provides a backup for the DNS service. It reduces network traffic.
STUB ZONE:
It is used for fast querying process. For example in the forest have three levels of tree as parent domain, child domain, grandchild domain. If grandchild domain sends any queries name resolution will occur in grandchild domain itself instead of passing child domain and parent domain.

Tags: DNS, Domain Naming System (DNS)