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Firewall
A security system used to protect an in-
ternal network or intranet from external
networks through an authentication proce-
dure.
Hibernation Mode
A power mode that saves all data in mem-
ory to the hard disk and turns the CPU and
hard disk off. When canceling Hibernation
Mode, all application programs that were
running are restored to their last state.
Icon
This refers to a small image that repre-
sents a file that users can use.
LAN (Local Area Network)
A communications network connecting
computers, printers and other devices
within a local area such as within a build-
ing. A LAN enables all connected devices
to interact with other devices on the net-
work. The current LAN uses the Ethernet
media access control method developed in
the early 1980s. To connect to an Ethernet,
a network card called a LAN card, Ethernet
card or network interface card is required.
To exchange data between computers, a
protocol is required besides the hardware
equipment. Windows Vista uses TCP/IP as
the default protocol.
LCD (Liquid Crystal Display)
There are Passive Matrix and Active Matrix
LCD types. This computer uses the Active
Matrix type LCD called a TFT LCD. Since
an LCD is implemented by transistors in-
stead of a cathode-ray tube unlike a CRT,
its size can be slim. And because it does
not blink, it reduces eye strain.
Network
A group of computers and devices, such
as printers and scanners, connected by
a communications link. A network can be
either small or large and can be connected
permanently through cables or temporar-
ily through telephone lines or wireless
links. The biggest network is the Internet, a
worldwide network.
Network Administrator
A user who plans, configures and manages
network operations. Sometimes, a network
administrator is called a system administra-
tor.
Notification Area
This refers to the right area of the Task-
bar including program icons such as the
volume control, the power options and the
time.
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