network topologies
TRANSCRIPT
Star typologies are one of the most
common computer topologies and
are also one of the simplest typolo-
gies that have a switch or hub in it.
The central point in the star typology
is the most used one and also the
most important because it provides
all of the other clients with a connec-
tion to each other. If the central point
(hub or switch) breaks down, then all
of the other people on the network
will not be able to send or receive
anything. This is one of the disad-
vantages of a star network.
There are a number of different ad-
vantages of a Star Typology. One of
them is better performance because
of the high-powered hub that is nor-
mally in star typologies. It is easy to
setup, detects faults and to remove
parts. Also there are no disruptions to
the network when connecting or re-
moving devices.
The disadvantages of a Star Network
is that there is a high dependence of
the hub in a star network. Also if the
hub goes down, then everyone else
on the network will not sent or re-
ceive anything.
Topologies
Star topology Bus topology
In local area networks, bus
topologies are used and each
node is connected to a single
cable. Each computer or
server is connected to each
other using a single bus ca-
ble. A signal from the source
travels in both directions to all
machines connected on the
bus cabled until it finds the
right computer or server. Bus
topology is inexpensive be-
cause it only consists of one
wire; but there is a high cost
Ring
A ring network is very simple
because it is a continuous
loop in a circle. Each device
acts like a repeater to keep
the signal strong. Each device
also is a receiver for the in-
coming signal and then pass-
Mesh
Mesh can also be called ‘Fully Con-
nected’ Because every node is not
connected to just 2 other nodes. Its
also connected to all of the other
nodes. This is a good thing because if
one line goes down, then they are
also connected to another node so
that the computer or server will nev-
er go down.
Partially connected:
There is also another type of mesh
which is a ‘Partially connected
mesh’. In this some of the nodes are
connected to more than one but
some others are not. This makes it
possible to take advantage of some
of the redundancy that is provided
Tree
A tree network
is a combina-
tion if the bus and Star Topology.
The tree structure allows to have
many servers on a network and
you can also branch out the net-
work in many ways. This is helpful
in collages, universities and
schools.