Glossary

IGMPInternet 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 programs 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 are identifiable by an IP address. Servers are addressed by a Domain names (for example siemens.com). Domain names are assigned to IP addresses by the Domain Name Service (DNS).

Among the most important Internet services are:uelectronic mail (email)uthe World Wide Web (WWW) u file transfer (FTP)u discussion forums (Usenet / Newsgroups)Internet ProviderAn Internet Service Provider offers access to the Internet for a fee.Internet telephonyVoice transmission via the Internet (Voice over IP).

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 complex network (routing).

171