Type of Connection
A network is two or more devices connected through links. A link is
a communications pathway that transfers data from one device to another. For
visualization purposes, it is simplest to imagine any link as a line drawn
between two points. For communication to occur, two devices must be connected
in some way to the same link at the same time. There are two possible types of
connections: point-to-point and multipoint.
Point-to-Point
A point-to-point connection provides a dedicated link between two
devices. The entire capacity of the link is reserved for transmission between
those two devices. Most point-to-point connections use an actual length of wire
or cable to connect the two ends, but other options, such as microwave or
satellite links, are also possible.
When we change television channels by infrared remote control, we
are establishing a point-to-point connection between the remote control and the
television’s control system.
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| Point-to-Point & Multipoint |
Multipoint
A multipoint (also called multi drop) connection is one in which
more than two specific devices share a single link.
In
a multipoint environment, the capacity of the channel is shared, either
spatially or temporally. If several devices can use the link simultaneously, it
is a spatially shared connection. If users must take turns, it is a timeshared connection.
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