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proxy server:
1) An application that forms part of a firewall by breaking the connection
between the sender and receiver. It intercepts requests for information,
decides whether they should be fulfilled and passes them on to an internal
server. It therefore prevents outsiders from obtaining internal addresses and
details about a private network. Also called proxy. 2) A server that stores
frequently requested data, such as popular Web pages, to reduce network (or
Internet) access.
R
radio frequency interference (RFI):
All computer equipment generates radio frequency
signals. The FCC regulates the amount of RFI a computing device can leak
past its shielding. A Class A device is sufficient for office use. Class B is a
more stringent classification applying to equipment for home use.
Toshiba
desktop and notebook computers are Class B devices, Toshiba servers are Class A.
radio frequency interference (RFI) shield:
A metal shield enclosing the printed circuit
boards of the printer or computer to prevent interference with radio and TV
reception.
random access memory (RAM):
High-speed memory which holds a copy of the
operating system, any currently executing programs, and any information
undergoing processing. RAM is volatile, which means that all information in
RAM is lost when its power supply is turned off.
read-only memory (ROM):
A type of memory which the computer can access but cannot
change. It contains information that controls the computer’s basic operation.
ROM is non-volatile memory, which means that the information stored in ROM
is permanent—it is not lost when you turn off the computer.
real time:
An operating mode in which data is received, processed, and the results
returned immediately.
reboot:
See
boot
,
restart
.
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