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what is DNS

DNS : The Domain Name System

March 28, 2018 by Satya Prakash
domain name system - DNS

Why we use DNS? To know this follow the link http://t4test.com/blog/etchosts-the-host-file/ Because of sheer numbers of hosts on the Internet, we can’t use host’s file (/etc/hosts) them. The ineternet has centralized file in its teens, but its maintenance because so painful that Berkeley had to step in with the Domain Name System (DNS). DNS is a … Read more

Categories Netorking Tags and so fourth. Like in the file system, basic of dns, basis of dns, Because of sheer numbers of hosts on the Internet, but its maintenance because so painful that Berkeley had to step in with the Domain Name System (DNS). DNS is a distributed system that is scalable, DNS : The Domain Name System, DNS concepet, easy, hosts belongs to domains, It introduces three key concepts: A hierarchical organization of host names A distributed database for performing the name-address mappings. Delegation of authority to individual levels of hierarchy. , signified by a . (dot). The root domain has immediately below it a number of top level domains (TLDs) or generic domains like edu and com. These in turn have number of sub domains or second level doma, these domains and sub domains form a hierarchy with the root domain as the top, we can't use host's file (/etc/hosts) them. The ineternet has centralized file in its teens, what is DNS, what is domain name system, which in turn could belong to sub domains 3 Comments

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