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Domain Name System DNS - , web- . IP-, 111.222.111.222, , merionet.ru. , IP-. DNS. , IP-.

DNS . root, (.) (Top Level Domain). :

  • Generic Top Level Domain (gTLD)
  • : .com ( web-), .net(web- ), .org (- ), .edu (web- )

  • Country Code Top Level Domain (ccTLD)
  • : .ru (), .us (), .uk (), .in ()

  Domain Name System

, -, DNS Zone Files. . DNS- , . , address mapping (A) host name IP-, reverse-lookup pointer (PTR), IP- host name. , DNS , :

  • A Record - IP-. DNS- , , . IP-, .
  • PTR Record - IP- .
  • NS (Name Server) Record - DNS-, .
  • MX (Mail Exchange) Record - . , example@merionet.ru, , MX .

DNS

DNS :

  1. Recursive : IP- a.merionet.ru?
  2. recursive , DNS- :

    • DNS- IP- a.merionet.ru?
    • DNS- a.merionet.ru .
    • DNS- IP- a.merionet.ru root-
    • Root- , TLD , .ru
    • DNS-, root-, recursive ccTLD-, .ru
    • TLD- , , merionet.ru
    • DNS- IP- a.merionet.ru , merionet.ru
    • A Record IP- a.merionet.ru
    • , a.merionet.ru
  3. DNS- Iterative . DNS-, . , ,
  4. Inverse. , , IP- .

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P.S. , :)

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