Short form = domain = name of a server. Every server, which is connected with the internet has a numeric ip adress (e.g. 69.63.181.11). For more convenience by using the internet the numeric codes are transferd in alpa numeric adresses = domain name (e.g. www.facebook.com) A domain consists of three parts:

• top-level-domain: com
• second-level-domain: facebook
• subdomain: www

— Alexander Stadler 2011/04/25 17:28