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One of the new features introduced in the Windows Server 2003-based implementation of DNS are stub zones. Its main purpose is to provide name resolution in domains, for which a local DNS server is not authoritative. The stub zone contains only a few records: - Start of Authority (SOA) record pointing to a remote DNS server that is considered to be the best source of information about the target DNS domain, - one or more Name Server (NS) records (including the entry associated with the SOA record), which are authoritative for the DNS domain represented by the stub zone, - corresponding A records for each of the NS entries (providing IP addresses of the servers). While you can also provide name resolution for a remote domain by either creating a secondary zone (which was a common approach in Windows Server 2000 DNS implementation) or delegation (when dealing with a contiguous namespace), such approach forces periodic zone transfers, which are not needed when stub zones are used. Necessity to traverse network in order to obtain individual records hosted on the remote Name Servers is mitigated to some extent by caching process, which keeps them on the local server for the duration of their Time-to-Live (TTL) parameter. In addition, records residing in a stub zone are periodically validated and refreshed in order to avoid lame delegations.
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What is stub Zone?
Stub zone When a zone that this DNS server hosts is a stub zone, this DNS server is a source only for information about the authoritative name servers for this zone. The zone at this server must be obtained from another DNS server that hosts the zone. This DNS server must have network access to the remote DNS server to copy the authoritative name server information about the zone. You can use stub zones to: * Keep delegated zone information current. By updating a stub zone for one of its child zones regularly, the DNS server that hosts both the parent zone and the stub zone will maintain a current list of authoritative DNS servers for the child zone. * Improve name resolution. Stub zones enable a DNS server to perform recursion using the stub zone's list of name servers, without having to query the Internet or an internal root server for the DNS namespace. * Simplify DNS administration. By using stub zones throughout your DNS infrastructure, you can distribute a list of the authoritative DNS servers for a zone without using secondary zones. However, stub zones do not serve the same purpose as secondary zones, and they are not an alternative for enhancing redundancy and load sharing. There are two lists of DNS servers involved in the loading and maintenance of a stub zone: * The list of master servers from which the DNS server loads and updates a stub zone. A master server may be a primary or secondary DNS server for the zone. In both cases, it will have a complete list of the DNS servers for the zone. * The list of the authoritative DNS servers for a zone. This list is contained in the stub zone using name server (NS) resource records. When a DNS server loads a stub zone, such as abc.xyz.com, it queries the master servers, which can be in different locations, for the necessary resource records of the authoritative servers for the zone abc.xyz.com. The list of master servers may contain a single server or multiple servers, and it can be changed anytime.
Which of these is not included on an employees pay stub?
benefits
DNS zones -describe the differences between the 4 types?
Primary zone, Secondary, Stub, Forward
What is stubzone?
Stub zones are copies of a zone that contain only the resource records that are necessary to identify the authoritative DNS server for that zone. A stub zone contains a subset of zone data consisting of a SOA, NS, and A record, also known as a glue record. A stub zone is like a bookmark that simply points to the DNS server that is authoritative for that zone. Stub zones can be used where root hints point to an internal DNS server rather than to the root servers on the Internet. For security purposes, the DNS server is designed only to resolve certain zones. Thaslim thaslimca007@gmail.com
What is the different types of dns zone?
I believe 3 types of dns 1)Primary and 2)secondary and stub zones .
What is the only real downside to using stub zones?
The stub zone is kept on a DNS server hosting a parent zone, and its only purpose is to identify the authoritative name servers in child zones. By keeping just this information at the ready, a DNS server is able to more efficiently route name resolution requests to the authoritative servers hosting the child zone files.
What is the difference between primary and secondary and stub zone?
A secondary zone is a read-only copy of a primary zone. Basically, you can use them to offload some of DNS traffic like queries, from areas in your network that are more heavily used. If your primary zone were to become unavailable, the secondary zone could provide name resolution until the primary zone is restored. Stub zones only store the name server, SOA, and A records. They can be used to minimize the network traffic. Stub zones are dynamic, so they can be used to update records for the parent zones.
What are the types of DNS zones in windows server 2003?
Primary zoneWhen a zone that this DNS server hosts is a primary zone, the DNS server is the primary source for information about this zone, and it stores the master copy of zone data in a local file or in AD DS. When the zone is stored in a file, by default the primary zone file is named zone_name.dns and it is located in the %windir%\System32\Dns folder on the server.Secondary zoneWhen a zone that this DNS server hosts is a secondary zone, this DNS server is a secondary source for information about this zone. The zone at this server must be obtained from another remote DNS server computer that also hosts the zone. This DNS server must have network access to the remote DNS server that supplies this server with updated information about the zone. Because a secondary zone is merely a copy of a primary zone that is hosted on another server, it cannot be stored in AD DS.Stub zoneWhen a zone that this DNS server hosts is a stub zone, this DNS server is a source only for information about the authoritative name servers for this zone. The zone at this server must be obtained from another DNS server that hosts the zone. This DNS server must have network access to the remote DNS server to copy the authoritative name server information about the zone.You can use stub zones to:Keep delegated zone information current. By updating a stub zone for one of its child zones regularly, the DNS server that hosts both the parent zone and the stub zone will maintain a current list of authoritative DNS servers for the child zone.Improve name resolution. Stub zones enable a DNS server to perform recursion using the stub zone's list of name servers, without having to query the Internet or an internal root server for the DNS namespace.Simplify DNS administration. By using stub zones throughout your DNS infrastructure, you can distribute a list of the authoritative DNS servers for a zone without using secondary zones. However, stub zones do not serve the same purpose as secondary zones, and they are not an alternative for enhancing redundancy and load sharing.There are two lists of DNS servers involved in the loading and maintenance of a stub zone:The list of master servers from which the DNS server loads and updates a stub zone. A master server may be a primary or secondary DNS server for the zone. In both cases, it will have a complete list of the DNS servers for the zone.The list of the authoritative DNS servers for a zone. This list is contained in the stub zone using name server (NS) resource records.When a DNS server loads a stub zone, such as abc.xyz.com, it queries the master servers, which can be in different locations, for the necessary resource records of the authoritative servers for the zone abc.xyz.com. The list of master servers may contain a single server or multiple servers, and it can be changed anytime.
How 45 deg lateral is welded on run pipe Is it stub-in or stub-on?
STUB-IN STUB-IN STUB-IN
What is the take up amount for a stub up bend using 1 inch imc?
11''
How can you write a sentence using stubborn?
Stubbs stubbworthy has to be the most Stubborn Stub I ever did stumble upon.
What are the different dns zones types?
There are 5 different types: Primary, Secondary, Stub, Active Directory integrated, and reverse look up. See the following link for info on the different zones.http:/www.tech-faq.com/understanding-dns-zones.shtml
