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1. A piece of a
physical
circuitry
component
that governs
signal
flow. Having the switch
open
allows the signal to flow through, while keeping the switch closed
stops
the flow and breaks the
circuit
connection.
 2.
On a
network, a switch is a
hardware
device
that
filters
and
forwards
packets
through the network, but often not capable of much more. The
first network device that was added to the Internet was a switch
called the IMP, which helped send the first message on October 29,
1969. A network switch is more advanced than a
hub
but not as advanced as a
router. To the right is a
graphic
example of a SMC EZ Switch, a
10/100 network switch. 3. A button or lever that can be
switched to turn a device on or off. 4. When referring to a command,
a switch
is an available option
that can be used with the command. For
example, the command: "fdisk"
can be used with the /MBR switch, using "FDISK /MBR" would
allow the user
to recreate the master
boot record
and not just run
the fdisk program.
Also see: Bridge, Electronics
definitions, Network definitions,
Parameter, Programmer's
switch, Router
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