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IEEE802.11g
Wireless LAN standard that supports a maximum data rate of 54 Mbps. 802.11g devices operate in the 2.4 GHz ISM
band.
IEEE802.11n
Wireless LAN standard using multiple data streams supporting a maximum data rate of 450 Mbps. 802.11n devices
operate in both the 2.4 GHz and 5 GHz UNII bands and are backward compatible with 802.11g and 802.11a.
Infrastructure
A name of a wireless LAN configuration. This type of communication uses an access point. Another type of
communication is called Ad Hoc.
IP Address
An identifier for a computer or device on a TCP/IP network. Networks using the TCP/IP protocol route messages based
on the IP address of the destination. The format of an IP address is a 32-bit numeric address written as four numbers
separated by periods. Each number can be zero to 255. For example, 1.160.10.240 could be an IP address.
Within an isolated network, you can assign IP addresses at random as long as each one is unique. However,
connecting a private network to the Internet requires using registered IP addresses (called Internet addresses) to
avoid duplicates.
The four numbers in an IP address are used in different ways to identify a particular network and a host on that
network. Three regional Internet registries -- ARIN, RIPE NCC and APNIC -- assign Internet addresses from the following
three classes.
Class A - supports 16 million hosts on each of 126 networks
Class B - supports 65,000 hosts on each of 16,000 networks
Class C - supports 254 hosts on each of 2 million networks
The number of unassigned Internet addresses is running out, so a new classless scheme called CIDR is gradually
replacing the system based on classes A, B, and C and is tied to adoption of IPv6.
