Simple DNS example

host surf.eurecom.fr wants IP address of gaia.cs.umass.edu

1. Contacts its local DNS server, dns.eurecom.fr

2. dns.eurecom.fr contacts root name server, if necessary

3. root name server contacts authoritative name server, dns.umass.edu, if necessary

requesting host

surf.eurecom.fr

gaia.cs.umass.edu

root name server

authorititive name server

dns.umass.edu

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