Instruction manual

XWEB 3000 – rel.1.3–
Ethernet - A network protocol invented by Xerox Corporation and developed jointly by Xerox, Intel and
Digital Equipment Corporation. Ethernet networks use CSMA/CD and run over a variety of cable types
at 10 Mbps (megabits per second).
Expansion Slot - Area in a computer that accepts additional input/output boards to increase the
capability of the computer.
F
Fast Ethernet - A new Ethernet standard that supports 100 Mbps using category 5 twisted pair or fiber
optic cable.
Fiber Optic Cable - A cable, consisting of a center glass core surrounded by layers of plastic, that
transmits data using light rather than electricity. It has the ability to carry more information over much
longer distances.
File Server - A computer connected to the network that contains primary files/applications and shares
them as requested with the other computers on the network. If the file server is dedicated for that
purpose only, it is connected to a client/server network. An example of a client/server network is Novell
Netware. All the computers connected to a peer-to-peer network are capable of being the file server.
Two examples of peer-to-peer networks are LANtastic and Windows for Workgroups.
G
Gigabit Ethernet - An Ethernet protocol that raises the transmission rates to 1 Gbps (gigabits per
second). It is primarily used for a high speed backbone of a network.
H
Hub - A hardware device that contains multiple independent but connected modules of network and
internetwork equipment. Hubs can be active (where they repeat signals sent through them) or passive
(where they do not repeat but merely split signals sent through them).
I
Infrared - Electromagnetic waves whose frequency range is above that of microwaves, but below that
of the visible spectrum.
Intranet - Network internal to an organization that uses Internet protocols.
Internet - A global network of networks used to exchange information using the TCP/IP protocol. It
allows for electronic mail and the accessing ad retrieval of information from remote sources.
ISP (Internet Service Provider) - Company that provide access to internet
L
LAN (Local Area Network) - A network connecting computers in a relatively small area such as a
building.
Linear Bus - A network topology in which each node attaches directly to a common cable.
LocalTalk - Apple Corporation proprietary protocol that uses CSMA/CA media access scheme and
supports transmissions at speeds of 230 Kbps (Kilobits per second).
M
MAN (Metropolitan Area Network) - A network connecting computers over a large geographical area,
such as a city or school district.
Modem (Modulator/Demodulator) - Devices that convert digital and analog signals. Modems allow
computer data (digital) to be transmitted over voice-grade telephone lines (analog).
Multiplexer - A device that allows multiple logical signals to be transmitted simultaneously across a
single physical channel.
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Network Modem - A modem connected to a Local Area Network (LAN) that is accessible from any
workstation on the network.