Options (A)
Space division (B) Time division (C) Virtual (D) Packet
Answer (B) Time
division.
Explanation
In space division, Any switching mechanism that is based on the through
connection of a set of input lines selectively to a set of output lines.
Space-division switches are implemented either by electromechanical or
electronic means. Prior to the advent of time-division switching, all telephone
and telegraph switching machines were implemented using a variety of
space-division switching techniques, particularly Stronger (step-by-step)
switches and crossbar switches.
time division
switch An
all-electronic switching system based on time division multiplexing(TDM) principles: an input digitized
signal from a source is connected to an output trunk by assigning a group of
bits from the input data stream to a time slot in a high-speed TDM output data
stream. Time-division switches are commonly also used as tandem switches where
time slots from an input TDM trunk are selectively connected to time slots in
an output TDM trunk.
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