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Page 26 NP5400 11g Wireless Access Point User Guide
Appendix B: Glossary
802.11b One of the IEEE standards for wireless networking hardware.
Products that adhere to a specific IEEE standard will work
with each other, even if they are manufactured by different
companies. The 802.11b standard specifies a maximum data
transfer rate of 11Mbps, an operating frequency of 2.4GHz,
and WEP encryption for security. 802.11b networks are also
referred to as Wi-Fi networks.
802.11g Refers to the proposed of the IEEE 802.11 standard for
wireless networking. The 802.11g specifications used by
NetComm specifies a maximum data transfer rate of 54Mbps
using OFDM modulation, an operating frequency of
2.4GHz, backward compatibility with IEEE 802.11b devices
and WEP encryption for security.
Ad-hoc Network An ad-hoc network is a group of computers, each with a
wireless adapter, connected as an independent 802.11
wireless LAN. Ad-hoc wireless computers operate on a
peer-to-peer basis, communicating directly with each other
without the use of an access point. Ad-hoc mode is also
referred to as an Independent Basic Service Set (IBSS) or as
peer-to-peer mode, and is useful at a departmental scale or
SOHO operation.
CTS (Clear To Send) An RS-232 signal sent from the receiving station to the
transmitting station that indicates it is ready to accept data.
Default Gateway The router used to forward all traffic that is not addressed to
a station within the local subnet.
DHCP (Dynamic Host Configuration Protocol) - A protocol that
lets network administrators manage centrally and automate
the assignment of Internet Protocol (IP) addresses in an
organization's network. Using the Internet's set of protocol
(TCP/IP), each machine that can connect to the Internet
needs a unique IP address. When an organization sets up its
computer users with a connection to the Internet, an IP
address must be assigned to each machine. Without DHCP,
the IP address must be entered manually at each computer
and, if computers move to another location in another part of
the network, a new IP address must be entered. DHCP lets a
network administrator supervise and distribute IP addresses
from a central point and automatically sends a new IP
address when a computer is plugged into a different place in
the network. DHCP uses the concept of a "lease" or amount
of time that a given IP address will be valid for a computer.