Operation Manual

110 KEN! – Glossary
data transfer. The protocol exchanges information according
to the Request/Reply principle. Newer versions of this proto-
col are equipped with a simple mechanism for authentica-
tion and for the negotiation of display options.
IMAP
Internet Message Access Protocol; an E-mail protocol that al-
lows clients to process E-mail on the server. It is also allows
folders to be created on the server to sort E-mail. IMAP was
developed to transmit messages only when they are needed:
Unlike in POP3, the user can select which data are actually to
be transmitted to his/her own computer. Moreover, initially
only headers are transmitted in IMAP4; attachments are not
included.
Internet
The Internet is a worldwide, decentrally organized computer
network for international data and information exchange.
The following services are available in the Internet: E-Mail,
WWW, USENET and FTP. Additional Internet services include
Telnet (terminal emulation) GOPHER (directory-oriented cata-
log) and WAIS (Wide Area Information System); these are be-
ing replaced increasingly by the graphical and multimedial
World Wide Web.
LAN
LAN (Local Area Network) refers to a local network for a limit-
ed space such as several offices or a fixed complex of build-
ings. LANs generally serve only computers within a given
company. LANs can exhibit ring topology, bus topology or
star topology, and may exhibit either a peer-to-peer or a cli-
ent-server structure.
NNTP
The Network News Transfer Protocol: a standard for the cre-
ation, forwarding, distribution and receipt of articles in Inter-
net news groups (Usenet).