What is DNS and why name resolution exists
Domain Name System which allows us to manage our domain in which we can add different name record like
A Record, Cname Record, Mx Record .
Why DNS
to fill gap between human and computer.
Human understand Language Hindi, English
Computer : Binary 0,1
What is the dig command and when it is used
Dig is cli based command.
Dig command allows us to find us website details like nameserver ip etc.
Understanding dig . NS and root name servers
dig .NS provides nameserver details
Root Name Server : Domain Registrar
Understanding dig com NS and TLD name servers
dig com NS this will .com name server details like ip .
TLD : Top Level Domain .com .in
Other level domains : .biz, .xyz
Understanding dig google.com NS and authoritative name servers
dig google.com provide domain ip, nameserver details, zone.
Authoritative name server means root Name server or root ip.