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13 Cards in this Set
- Front
- Back
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Active Directory Intergrated Zone
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When a DNS zone in integrated with AD, it is hosted in the ADDS database, NTDS.dit, and it is replicated throughout the directory with other directory data
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Aging
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DNS records are associated with an age or TIme to live (TTL). When the record lasts beyond beyond its age it is no longer valid and can result in false positives, giving users the impression they are going to a specific location when the location is no longer valid.
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Applicatoin directory partitions
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when DNS data is stored within ADDS directiry databases, it is replicated by default within the directory data it is associated with.
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DDNS
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This is a DNS service that can be automatically updated by the clients that rely on it. In Server 2008 R2 you install DDNS whenever you choose to install the DNS service with ADDS.
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DNS Notify
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Traditional or former DNS servers manage data in local files.
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Domain DNS Zone
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This is the zone that contains the record for a particular domain, either a root or child domain, within an ADDS forest structure.
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Forest Zone DNS
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This is the zone that contains the records that pertain to an entire forest within an ADDS forest structure.
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Forward Lookup
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DNS supports two types of lookups: Forward and Reverse. A forward lookup relies on a client providing an FQDN to the server. The server then matches this FQDN to the corresponding IP address.
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Forward Lookup Zone
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This comprises DNS containers--databases or text files--that incluse name resolutions for forward lookups
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Forwarders
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DNS server have two mechanisms for name resolution: forwarders and root hints. DNS server that provide name resolution service to the internal network oftern rely on forwarders to forward any request they cannot resolve on their own to a trusted external DNS server.
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Global Name Zone
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NetBIOS names are single-label names that do not use the FQDN format.
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Legacy DNS
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Nondynamic DNS serv3ers that rely on manual updating of zone records are deemed legacy DNS servers.
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Name Recursion
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Name resolutions can be either ITERATIVE or RECURSIVE. In an iterative request, each DNS server holds only part of the answer for a query and must rely on other DNS servers to complete the query. In a recursive query, the DNS server holds the complete answer and provides it to the requester. Record aging makes it possible for recursive queries to respons with an erroneous IP address
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