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Il y a deux varieties de serveurs DNS: les résolveurs (aussi appelés récursifs, bien qu'ils travaillent de manière itérative) et les serveurs faisant autorité[seventeen].
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serveurs faisant autorité Les serveurs récursifs vont parcourir la Helloérarchie DNS et faire suivre la requête à un ou plusieurs autres serveurs de noms ayant autorité pour fournir une réponse. Les adresses IP de ces serveurs récursifs sont souvent obtenues par l'utilisateur final via DHCP ou encore configurés en dur sur la equipment hôte de l'utilisateur.
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The top of the hierarchy is served by the foundation name servers, the servers to query when searching up (resolving) a TLD.
The iterative question process is often a method in which a DNS resolver queries a series of one or more DNS servers. Every single server refers the shopper to the subsequent server within the chain, till The existing server can entirely resolve the request.
On représente un nom de domaine en indiquant les domaines successifs séparés par un place, les noms de domaines supérieurs se trouvant à droite.
The Domain Name procedure delegates the accountability of assigning domain names and mapping Individuals names to World-wide-web resources by designating authoritative name servers for every domain. community directors may well delegate authority more than subdomains in their allocated name Area to other name servers.
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A DNS resolver that implements the iterative technique mandated by RFC 1034; in this case, the resolver consults three name servers to take care of the entirely certified domain name "".
the online market place maintains two principal namespaces, the domain name hierarchy along with the IP address Areas.[2] The Domain Name System maintains the domain name hierarchy and presents translation services involving it and also the address spaces.
Une extension du DNS nommée DNS dynamique (DDNS) permet à un customer de mettre à jour une zone avec des informations qui le concernent (RFC 2136[32]). Ceci est utile quand des clientele obtiennent une adresse IP par DHCP et qu'ils souhaitent que le DNS reflète le nom réel de la equipment.
The DNS is often rapidly and transparently up to date, making it possible for a services's spot on the community to alter with out affecting the tip customers, who continue to utilize the exact same hostname. end users make the most of this if they use significant Uniform useful resource Locators (URLs) and e-mail addresses without having to understand how the pc really locates the services.
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