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cit327 packets
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Simplex transmission
Occurs in only one direction
Rarely used in wireless communication today except for
broadcast
radio and
television
Half-duplex transmission
Sends data in both directions but only one way at a time
Ex
: walkie-talkies
Full-duplex transmission
Allows data to flow in both directions simultaneously
EX
: telephone
Switching
Involves
moving
the
signal
from one
wire
or frequency to another
Circuit switching
Type of switching used by telephone systems
A
dedicated
and direct physical
connection
is made between the caller and the recipient
Packet switching
Used by data networks
Data transmissions are broken into packets
Each packet is sent independently
Packet switching advantages
Allows better utilization of the network
Allows multiple computers to
share
the same
line
or frequency
If a transmission
error
occurs it would usually
affects only one
or a few packets
Author
ruddyo
ID
64277
Card Set
cit327 packets
Description
circuit, packet switching
Updated
2011-02-05T17:26:31Z
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