Glossary; Glossary Of Terms Used In This Document - Fujitsu LifeBook E Series User Manual

Wireless LAN.book Page 31 Wednesday, November 28, 2001 11:30 AM

Glossary

GLOSSARY OF TERMS USED IN THIS DOCUMENT

AdHoc
A name of a wireless LAN configuration.
It is a type of communication using wireless cards only.
Another type of communication is called Infrastructure
(using a wireless card and an access point).
For details, refer to "Wireless LAN Modes Using this
Device" on page 5.
ADSL
Asymmetric Digital Subscriber Line
Technology for transporting high bit-rate services over
ordinary phone lines.
Channel
A radio frequency band used for communication
between wireless cards and access points.
DHCP
Dynamic Host Configuration Protocol
A protocol used to automatically acquire parameters
required for the communication, such as IP address.
The sender of IP address is called a DHCP server, and
the receiver is called a DHCP client.
DNS
Domain Name System
A function to control the association between the IP
address and the name assigned to the computer.
If you do not know the IP address but if you know the
computer name, you can still communicate to that
computer.
Encryption Key (Network Key)
Key information used to encode data for data transfer.
This device uses the same encryption key to encode and
decode the data, and the identical encryption key is
required between the sender and receiver.
IEEE 802.11b
The U.S. IEEE (Institute of Electrical and Electronic
Engineers) promotes standardization of LAN, and its
standards committee (IEEE 802.11) has promoted 1-
Mbps and 2-Mbps wireless LAN. Currently, another
standards committee (IEEE802.11b) is working for stan-
dardization of the faster 11-Mbps wireless LAN.
G l o s s a r y
Infrastructure
A name of a wireless LAN configuration. This type of
communication uses an access point.
Another type of communication is called AdHoc.
For details, refer to "Wireless LAN Modes Using this
Device" on page 5.
IP Address
An address used for computers to communicate in the
TCP/IP environment.
Current IPv4 (version 4) uses four values in the range
between 1 and 255. (Example: 192.168.100.123).
There are two types of IP address: global address and
private address.
The global address is an only address in the world. It is
controlled by JPNIC (Japan Network Information
Center). A private address is an only address in the
closed network.
LAN
Local Area Network
A connection of computers within a relatively limited
area, such as the same floor, or the same building.
MAC Address
Media Access Control Address
A unique physical address of a network card.
For Ethernet, the first three bytes are used as the vendor
code, controlled and assigned by IEEE. The remaining
three bytes are controlled by each vendor (preventing
overlap), therefore, every Ethernet card is given a unique
physical address in the world, being assigned with a
different address from other cards. For Ethernet, frames
are sent and received based on this address.
MTU
Maximum Transmission Unit
The maximum data size that can be transferred at a time
through the Internet or other networks. You can set a
smaller MTU size to obtain successful communication,
if you have difficulty transferring data due to the fact
that the maximum size is too large.
PCI
Peripheral Component Interconnect
Self-configuring PC local bus. Designed by Intel, PCI
has gained wide acceptance as a standard bus design.
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