Browse Definitions :
Definition

recursive DNS query

A recursive DNS query is a request from a client for a website that must be responded to with either the sought response -- the IP address associated with the corresponding site name or uniform resource locator (URL)  -- or an error message stating that the site does not exist.

Recursive DNS queries are standard requests by users or by domain name system (DNS) servers that are configured to pass along unresolved IP requests to another DNS server; in that way, the first server can stay available. Recursive DNS queries and recursive DNS servers are used to distribute some of the huge workload involved in resolving the names of websites into URLs.

Recursive DNS requests are filled either from the server’s own zone file cache or by consulting other servers in the hierarchy of authoritative DNS servers. The client request does not get passed on, however. It is the recursive DNS server that stays in contact until it provides the IP address or finds the request cannot be resolved and returns an error message stating that the site does not exist.

It should be noted that all DNS servers must support iterative requests. Even the requests made by recursive servers to other DNS servers are iterative. At the level of root DNS, all servers are iterative as they are the end of the line and a crucial point that needs to be available for the internet to function.

This was last updated in November 2016

Continue Reading About recursive DNS query

SearchCompliance
  • pure risk

    Pure risk refers to risks that are beyond human control and result in a loss or no loss with no possibility of financial gain.

  • risk reporting

    Risk reporting is a method of identifying risks tied to or potentially impacting an organization's business processes.

  • risk profile

    A risk profile is a quantitative analysis of the types of threats an organization, asset, project or individual faces.

SearchSecurity
  • script kiddie

    Script kiddie is a derogative term that computer hackers coined to refer to immature, but often just as dangerous, exploiters of ...

  • cipher

    In cryptography, a cipher is an algorithm for encrypting and decrypting data.

  • What is risk analysis?

    Risk analysis is the process of identifying and analyzing potential issues that could negatively impact key business initiatives ...

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • fault-tolerant

    Fault-tolerant technology is a capability of a computer system, electronic system or network to deliver uninterrupted service, ...

  • synchronous replication

    Synchronous replication is the process of copying data over a storage area network, local area network or wide area network so ...

SearchStorage
  • gigabyte (GB)

    A gigabyte (GB) -- pronounced with two hard Gs -- is a unit of data storage capacity that is roughly equivalent to 1 billion ...

  • MRAM (magnetoresistive random access memory)

    MRAM (magnetoresistive random access memory) is a method of storing data bits using magnetic states instead of the electrical ...

  • storage volume

    A storage volume is an identifiable unit of data storage. It can be a removable hard disk, but it does not have to be a unit that...

Close