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Glossary
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IGMP
Internet Group Management Protocol
IGMP is an Internet
that enables an Internet computer to inform neighbouring
routers that it is a member of a multicast group. With multicasting, a computer can send
content on the Internet to several other computers that have registered an interest in
the first computer's content. Multicasting can, for example, be used for multimedia pro-
grams for media streaming to recipients that have set up multicast group membership.
Infrastructure mode
Infrastructure mode is a way of operating wireless local networks (
) in which an
handles the data traffic. Network components cannot establish a direct
connection with each other as is the case in
.
Internet
The Internet is a wide-area network (
) linking several million users around the
have been created for exchanging data, and these are
known collectively as
. All participants on the Internet are identifiable by an
. Servers are addressed by a
(e.g. siemens.com). Domain names
are assigned to IP addresses by the Domain Name Service (
Among the most important Internet services are:
u
electronic mail (email)
u
the World Wide Web (WWW)
u
file transfer (FTP)
u
discussion forums (Usenet / Newsgroups)
Internet Provider
An Internet Service Provider offers access to the
for a fee.
Internet telephony
Voice transmission via the
(Voice over
).
IP
Internet Protocol
The IP
is one of the
protocols. It is responsible for addressing parties in a
network using
, and routes data from the sender to the recipient. It decides
the paths along which the data packets travel from the sender to the recipient in a com-
plex network (routing).
