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Glossary
Gigaset SE555 WLAN dsl / en / A31008-M1037-B181-1-7619 / glossary.fm / 27.06.2006
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IGMP
Internet Group Management Protocol
IGMP is an Internet
Protocol
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 (
WLANs
) in which an
Access point
handles the data traffic. Network components cannot establish a direct
connection with each other as is the case in
Ad-hoc mode
.
Internet
The Internet is a wide-area network (
WAN
) linking several million users around the
world. A number of
Protocols
have been created for exchanging data, and these are
known collectively as
TCP/IP
. All participants on the Internet can be identified by an
IP
address
. Servers are addressed by
Domain names
(e.g. siemens.com). Domain names
are assigned to IP addresses by the Domain Name Service (
DNS
).
Among the most important Internet services are:
u
electronic mail (e-mail)
u
the World Wide Web (WWW)
u
file transfer (FTP)
u
discussion forums (Usenet / Newsgroups)
Internet service provider
An Internet service provider offers access to the
Internet
for a fee.
IP
Internet protocol
The IP
Protocol
is one of the
TCP/IP
protocols. It is responsible for addressing parties in a
network using
IP addresses
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).
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