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What do the DNS servers do with the information learned from the iterative queries?
Wiki User
∙ 12y ago
An iterative name query is one in which a DNS client allows the DNS server to return the best answer it can give based on its cache or zone data. If the queried DNS server does not have an exact match for the queried name, the best possible information it can return is a referral (that is, a pointer to a DNS server authoritative for a lower level of the domain namespace). The DNS client can then query the DNS server for which it obtained a referral. It continues this process until it locates a DNS server that is authoritative for the queried name, or until an error or time-out condition is met.
This process is sometimes referred to as "walking the tree," and this type of query is typically initiated by a DNS server that attempts to resolve a recursive name query for a DNS client.
Wiki User
∙ 12y ago
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Which DNS configuration item will forward DNS queries to different servers based on domain name of the query?
A conditional forwarder will forward DNS queries to different servers based on domain name.
What is the name of the server that directs queries domain servers?
Domain name queries are handled by the DNS Servers. The most popular DNS server software is BIND 9.
What kind of server responds to recursive queries?
A DNS servers that is setup with to preform recursive queries or an SQL server
What is the difference between iterative queries and recursive queries of dns?
Recursive queries When a client system sends a recursive query to a local name server, that local name server must return the IP address for the friendly name entered, indicate that it can't find an address, or return an error saying that the requested address does not exist. Name servers do not refer the client system requesting a recursive query to other DNS servers. When answering recursive queries, the originating client does not receive address information directly from any DNS server other than the local name server. Typically, the local name server will first check DNS data from its own boot file, cache, database, or reverse lookup file. If the server is unsuccessful in obtaining the answer from those local sources, it may contact other DNS servers for assistance using iterative queries and then pass the information it receives back to the client that originated the name resolution request. Iterative queries In iterative queries, name servers return the best information they have. Although a DNS server may not know the IP address for a given friendly name, it might know the IP address of another name server likely to have the IP address being sought, so it sends that information back. The response to an iterative query can be likened to a DNS server saying, "I don't have the IP address you seek, but the name server at 10.1.2.3 can tell you." The process is straightforward. Here's one example in which a local name server uses iterative queries to resolve an address for a client: The local name server receives a name resolution request from a client system for a friendly name (such as www.techrepublic.com). The local name server checks its records. If it finds the address, it returns it to the client. If no address is found, the local name server proceeds to the next step. The local name server sends an iterative request to the root (the "." in .com) name server. The root name server provides the local name server with the address for the top-level domain (.com, .net, etc.) server. The local name server sends an iterative query to the top-level domain server. The top-level domain server replies with the IP address of the name server that manages the friendly name's domain (such as techrepublic.com). The local name server sends an iterative request to the friendly name's domain name server. The friendly name's domain name server provides the IP address for the friendly name (www.techrepublic.com) being sought. The local name server passes that IP address to the client. It seems complicated, but the process completes in a matter of moments. Or, if an address isn't found, a 404 error message is returned to the client.
To which type of server do client computers on the network send their DNS queries?
DNS Servers
Which type of server do client computers on the network send their DNS queries?
DNS servers
What is the difference between information technology and computer information systems?
Computer Information Technology refers to hardware (PC's, servers, networks etc) and the associated operating system software (broadly computer software in general can or could be referred to as a form of information technology). Computer Information Systems are a type of computer software used for the collection of raw data on to which queries can be asked. The output of the queries would then be termed as Information (and may be presented in the form of pie charts, line graphs etc).
What is the difference between Computer Information system and Information Technology?
Computer Information Technology refers to hardware (PC's, servers, networks etc) and the associated operating system software (broadly computer software in general can or could be referred to as a form of information technology). Computer Information Systems are a type of computer software used for the collection of raw data on to which queries can be asked. The output of the queries would then be termed as Information (and may be presented in the form of pie charts, line graphs etc).
Where can one find information about Debian dedicated servers?
One can find information about Debian dedicated servers by going to the Debian website. The website has information and support services about their servers.
Where can someone find information on Google servers?
You can find information on Google servers by googling information on Google servers and it will help you find what your looking for. Once you have the information you are looking for then just click the link and your information will pop up on a new screen.
What is a dns forwarder used for?
A forwarder is a Domain Name System (DNS) server on a network used to forward DNS queries for external DNS names to DNS servers outside of that network. You can also forward queries according to specific domain names using conditional forwarders.A DNS server on a network is designated as a forwarder by having the other DNS servers in the network forward the queries they cannot resolve locally to that DNS server. By using a forwarder, you can manage name resolution for names outside of your network, such as names on the Internet, and improve the efficiency of name resolution for the computers in your network. For more information about forwarders and conditional forwarders
What kind of servers contain databases of associated names and IP addresses and provide this information to resolvers on request?
DNS servers provide this information.
