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TCP/IP Guide by Charles M. Kozierok

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DNS Name Server Data Storage

One of the most important jobs performed by name servers is the storage of name data. Since the authority for registering names is distributed across the internetwork using DNS, the database of name information is likewise distributed. An authoritative server is responsible for storing and managing all the information for the zones of authority it is assigned.

Each DNS server is, in essence, a type of database server. The database contains many kinds of information about the subdomains and individual devices within the domain or zone for which the server is responsible. In DNS, the database entries that contain this name information are called resource records (RRs). A specific set of RRs is associated with each node ...

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