Operation Manual

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information, in the form of electrical signals,
between devices. Ethernet is an imp
lementation of
CSMA/CD that operates in a bus or star topology.
F
Fast
Ethernet
Fast Ethernet, also called 100BASE-
T, operates at
10 or 100Mbps per second over UTP, STP, or fiber-
optic media.
Firewall Firewall is considered the first line of d
efense in
protecting private information. For better security,
data can be encrypted. A system designed to
prevent unauthorized access to or from a private
network. Firewalls are frequently used
to prevent
unauthorized Internet users from accessing private
networks connected to the Internet, especially
Intranets all messages entering or leaving the
intranet pass through the firewall, which examines
each message and blocks those that do not meet
the specified security criteria.
G
Gateway
A gateway links computers that use different data
formats together.
Group
Groups consist of several user machines that have
similar characteristics such as being in the same
department.
H
HEX Short for hexadecimal refers to the base-
16 number
system, which consists of 16 unique symbols: the