Domain names

DéfinitionNom de domaine

A domain name is a symbolic address.

  • They are easier to use for human beings.

  • They create an abstraction that allows to change machines (and IP) without changing website names or email addresses for instance.

Exemple

91.198.174.192 can be associated with wikipedia.org.

DéfinitionDNS

A domain name server is a server that knows how to translate domain name into IP addresses.

ExempleRésoudre une IP

1
$ host www.wikipedia.org
2
www.wikipedia.org is an alias for dyna.wikimedia.org.
3
dyna.wikimedia.org has address 91.198.174.192
4
dyna.wikimedia.org has IPv6 address 2620:0:862:ed1a::1
Stéphane Crozat, Youssef El Saadany, Quentin Duchemin, Kyane Pichou Paternité - Partage des Conditions Initiales à l'Identique