Hi, Why when I joint one computer to the domain, it authomatically creates host record? That record records the name and the IP of that computer, Why it has to be like that because if it does not create I also can ping the computer by using name?

The A record creates by DNS is the host name in the FQDN, which consistes of the host name, the domain name and the top lever domain name. If you ping host.domain.tld then you are using DNS resolution. The computer can also resolve using NetBIOS resolution, so if you ping the computer name, you are using NetBIOS not DNS to resolve. http://en.wikipedia.org/wiki/NetBIOS Chazzie / IT Manager Advanced Door Controls, Inc.

Hi, By default, computers that are statically configured for TCP/IP attempt to dynamically register host (A) and pointer (PTR) resource records (RRs) for IP addresses configured and used by their installed network connections. By default, all computers register records based on their fully qualified domain name (FQDN). Dynamic update http://technet.microsoft.com/en-us/library/cc784052(v=ws.10).aspx With the introduction of Windows Server, DNS name resolution is used over NetBIOS name resolution. The DNS Client service handles name resolution. It first submits all name resolution tasks to DNS. If DNS name resolution cannot occur, the DNS Client service submits the name to NetBIOS. The common methods used to resolve host names are listed below: NetBIOS name resolution: HOSTS file: DNS server: Host Name Resolution http://technet.microsoft.com/en-us/library/bb727005.aspx Brent Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”