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DNS Client

Updated: November 13, 2007

Applies To: Windows Server 2008

The DNS Client service is the client component that resolves and caches Domain Name System (DNS) domain names. When the DNS Client service receives a request to resolve a DNS name that it does not contain in its cache, it queries an assigned DNS server for an IP address for the name. If the DNS Client service receives the requested address, it stores the name and address in its cache to resolve future requests without having to query the DNS server. All computers that use DNS to resolve domain names (including DNS servers and domain controllers) use the DNS Client service for this purpose.

Aspects

The following is a list of all aspects that are part of this managed entity:

Name Description

DNS Client Deregistration

A computer that is configured to use Dynamic Host Configuration Protocol (DHCP) to obtain IP addresses can automatically register its IP address and Domain Name System (DNS) name with the DNS server that is authoritative for the zone that hosts their domains. This eliminates the need for an administrator to manage host (A or AAAA) resource records for client computers. When DHCP assigns a new address to a computer, the DHCP client can request that its previous address be removed from the DNS server. This process is called deregistration. Problems with automatic deregistration do not prevent a computer from accessing the network, but they can cause names to be resolved to incorrect addresses.

DNS Client Registration

A computer that is configured to use Dynamic Host Configuration Protocol (DHCP) to obtain IP addresses can automatically register its IP address and Domain Name System (DNS) name with the DNS server that is authoritative for the zone that hosts its domain. This eliminates the need for an administrator to manage host (A or AAAA) resource records for client computers. Problems with automatic registration do not prevent a computer from accessing the network, but they can prevent other network computers from being able to locate the computer.

DNS Client Service Status

Domain Name System (DNS) is a protocol that makes it possible for a computer to obtain the numeric IP address of another computer by submitting the target computer's name to a DNS server computer. The DNS Client service sends requests for name resolution services to DNS servers. Problems with the DNS Client service can prevent a network computer from locating other network computers.

Related Management Information

DNS Infrastructure

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