A set of computers that all use the same protocol in order to exchange information among themselves.
Newbie or Newby
A newcomer to the nets, who reveals his or her inexperience by lack of knowledge of net conventions, netiquette, vocabulary, and know-how.
nslookup
A common Internet utility like ping and traceroute. Given an IP address or a DNS address, it will look up and show the corresponding DNS or IP address. There are nslookup utility programs available for every operating system, which you can use with a PPP or networked or shell account. The commonly used FTP program WS_FTP Pro includes a number of utilities including nslookup.