[5] This flag is generally reproduced prominently inside the output of DNS administration question resources, which include dig, to indicate which the responding name server is undoubtedly an authority to the domain name in question.[five]

Quand un domaine est délégué à un serveur de noms qui appartient à ce sous-domaine, il est nécessaire de fournir également l'adresse IP de ce serveur pour éviter les références circulaires.

A Principal server is usually a server that retailers the first copies of all zone documents. A secondary server utilizes a Specific automatic updating mechanism from the DNS protocol in communication with its Principal to maintain an identical duplicate of the main records.

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Parmi ceux fournis dans la réponse, le serveur récursif va en choisir un pour lui demander quels serveurs ont autorité pour la zone wikipedia.org. C'est un de ces derniers qui pourra lui donner l'adresse IP de fr.wikipedia.org. S'il se trouve qu'un serveur ne répond pas, un autre serveur de la liste sera seek the advice ofé.

L'ordre des serveurs est quelconque. Tous les serveurs indiqués doivent faire autorité pour le website domaine.

Subsequently, genuine software requests may very well be redirected to community hosts operated with malicious intent.

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in a very non-recursive query, a DNS resolver queries a DNS server that provides a report possibly for which the server is authoritative, or it offers a partial final result without querying other servers.