[01] WHAT IS A DOMAIN NAME SYSTEM (DNS)?

    Domain Name System (DNS) is the registration of a domain namespace
    with a TOP-LEVEL (root) domain name servers on the internet.

    There seems to quite a misunderstanding among internet newbies regarding
    what DNS is .. to make it clear, here is a short list of what DNS is
    and isn't.

    A DNS record lists:

    * The IP addresses for the domain and hosts associated with the domain.
    * The aliases associated with the domain.
    * The mail exchanger servers responsible for the domain.

    A DNS record is NOT:

    * webservice
    * mail service
    * ftp, telnet, finger .. et cetera

    In short DNS basically is a DOCUMENT which states where services can
    be found, but no services (other than the information) is provided.