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| first level domains are organizational types such as .org .com |
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| One of three top level domains there are .us .jp |
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| registered to individuals or organizations such as microsoft.com |
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| for a particular zone if its host a primary or secondary zone for a particular DNS domain |
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| text-based zone file containing lists of mapping |
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| text-based zone file containing lists of mapping |
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| discretionary access control list (DACL) |
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| enables you to specify which users and groups may modify the DNS zones |
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| for Active Directory integrated zones which will only allow records to be updated by the client that first registered the record |
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| to all domain controllers that are DNS servers in the local domain |
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| To all domain controllers that are also DNS servers in the entire forest |
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| resource record maps a FQDN to an IPv4 address |
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| perfoms the same function as host (A) but for the IPv6 address |
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| canonical name resource record (CNAME) |
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| used to hide the implementation details of your network resource records from the clients connect to |
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| mail exchanger (MX) resource record |
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| specifies a server that is configured to act as a mail server for a DNS name. |
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| is a positive answer returned to the client and delivered bit set in the DNS message to indicate the answer was obtained from a server with direct authority for the quiered name |
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| resolves quieres for names that is not authoritive for or for which it contaains no delegation |
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| value applies to all cached resource records |
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| is a DNS server on a network used to forward DNS queries for external DNS names to DNS servers outside of that network |
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| forwards quieries on the basis of a domain name |
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| will not perform recursion after the forwarder fails |
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