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How is a DNS server used?

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raghuramastrologer Offline referral

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#1
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How is a DNS server used?
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DNS stands for domain name server the name says it all. It's a separate from your website's server that only houses domains.
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dns server configured by developer
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well domain server used by web developing company
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Domain Name Servers (DNS) are the Internet's equivalent of a phone book. They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses. This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses.
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A DNS server is a computer used to resolve hostnames to IP addresses.
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DNS is like a address book, telling you where a domain name resides on.
Remembering IP addresses to visit sites is not feasible, and sites cannot be rendered without an IP. Hence DNS.

Your local ISP, has a DNS cache(likely your configured DNS), which gets all lookups from ISP users within.
DNS cache connects to upstream authoritative nameservers, starting with dot then tld(eg com net) and then to the domain's authoritative servers.

Like "dot" root server, tell me where to lookup for "(dot) com".
Hey "(dot) com" auth, tell me where to lookup for "dom (dot) com"
Hey dom (dot) com auth, what is the IP of dom (dot) com? Here is the IP for dom (dot) com. -> ISP DNS cache.

You local ISP DNS cache, caches the reply from dom (dot) com auth DNS server, and gives your browser an IP address to connect, to render website.
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