WebSTAR™ Model DPW941™ Wireless Ethernet Adapter User’s Guide
54
IP Address
An IP address is a 32-bit number that identifies each sender or receiver of
information sent across the Internet. An IP address has two parts: the identifier of
a particular network on the Internet and an identifier of the particular device (which
can be a server or a workstation) within that network.
ISP
Internet Service Provider. An organization that provides access to the Internet.
Small ISPs provide service via modem and ISDN while the larger ones also offer
private line hookups (T1, fractional T1, etc.).
LAN
Local Area Network. A communications network that serves users within a defined
geographical area. The benefits include the sharing of Internet access, files, and
equipment, such as printers and storage devices. Special network cabling
(10BaseT) is often used to connect the PCs together.
NAT
Network Address Translation. The translation of an Internet Protocol address
(IP address) used within one network to a different IP address known within
another network. One network is designated the internal network and the other is
the external. The internal network then appears as one entity to the outside world.
Radio
Frequency
RF, Terms: GHz, MHz, Hz —The international unit for measuring frequency is Hertz
(Hz), equivalent to the older unit of cycles per second. One megahertz (MHz) is one
million Hertz. One gigahertz (GHz) is one billion Hertz. The standard U.S. electrical
power frequency is 60 Hz. The AM broadcast radio frequency band is 0.55–1.6 MHz.
The FM broadcast radio frequency band is 88–108 MHz. Wireless 802.11 LANs
operate at 2.4 GHz.
SSID
Service Set ID. A group name shared by every member of a wireless network. Only
client PCs with the same SSID are allowed to establish a connection.
Subnet Mask
A value that defines whether your computer communicates only within your LAN or
communicates outside of your LAN, where it is routed out to the rest of the Internet.
A Subnet Mask that has the same first three components (for example,
255.255.255.0) is the routing pattern for a Class C address.
TCP
Transmission Control Protocol. The standard transport level protocol that provides
the full duplex, stream service on which many applications’ protocols depend. TCP
allows a process on one machine to send a stream of data to a process on another.
Software implementing TCP usually resides in the operating system and uses the IP
to transmit information across the network.
WEP
Wired Equivalent Privacy. The optional cryptographic confidentiality algorithm
specified by 802.11. The algorithm is being used to provide data confidentiality that
is subjectively equivalent to the confidentiality of a wired LAN medium that does not
employ cryptographic techniques to enhance privacy.
