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.

 

 

www.netcomm.com.au

Rev. 1 - YML668

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NP5400 11g Wireless Access Point User Guide

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NetComm NP5400 manual Appendix B Glossary, Dhcp