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Domain name system

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Saksham Khurana

The document discusses the Domain Name System (DNS), which allows users to use domain names instead of IP addresses to locate computers and services on the internet. DNS uses a hierarchical naming system to organize domains from top-level domains like .com and .org down to individual webpages. It explains key aspects of DNS including that names can be up to 63 characters, the hierarchy is similar to a folder system, and the tree can be up to 128 levels deep.

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Domain Name System Saksham 3088
It is a TCP/IP facility that lets us use names rather than numbers.
Domain name system
Divide & Conquer Uses a hierarchical naming system Organizes Into Domains
Root edu com in org MySite PC 1 Server Printer PC 2 MySite.com Domain server.mysite.com
Domain name system
DNS are case sensitive Name of each DNS node must be 63 char long DNS hierarchy is similar to windows folder system DNS tree can be upto 128 levels deep
Domain name system
myhost Localhost Name Example.com Parent Name Fully Qualified Domain Name - myhost.example.com.
myhost Localhost Name DNS Server/Resolver will automatically provide the parent domain Used when the name to be resolved belong to the same site as the client.
Domain name system
Root com server in server org server MySite PC 1 Server Printer PC 2 com Zone server.mysite.com Primary server Secondary server Root Zone
Thank You ! Saksham 3088 # DNS

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Domain name system