Transcript network topology

NETWORK
TOPOLOGY
WHAT IS NETWORK
TOPOLOGY?
 Network Topology is the shape or
physical layout of the network. This is
how the computers and other devices
are linked together to form a network.
Main Types of Physical
Topologies
 Ring Topology
 Star Topology
 Bus Topology
RING TOPOLOGY
Ring Topology is a ring pattern which
connects the computers and other
devices in a circle. All devices are
connected to one another in the shape
of a closed loop, so that each device
is connected directly to two other
devices, one on either side of it.
RING TOPOLOGY
ADVANTAGES OF RING
TOPOLOGY
 Requires less cabling and so it is less
expensive
 Performs better than a bus topology
under heavy network load
 Does not require network server to
manage the connectivity between the
computers
DISADVANTAGES OF RING
TOPOLOGY
 If one node is down, then the entire
network will not be able to function
 Moving, adding and changing of a
computer or other devices can affect
the network
 Ring networks are slower than star
network
STAR TOPOLOGY
Star Topology is a star pattern that
connects everything to the host which
is the computer that handles the
network’s tasks and holds the data.
All devices are connected to a hub
(central device) forming a star.
STAR TOPOLOGY
ADVANTAGES OF STAR
TOPOLOGY
 Easy to install and wire.
 No disruptions to the network when
connecting or removing devices.
 Easy to detect faults and to remove
parts or devices.
DISADVANTAGES OF
STAR TOPOLOGY
 Requires more cable length than a
linear topology.
 If the hub or concentrator fails, nodes
attached are disabled.
 More expensive than linear bus
topologies because of the cost of the
concentrators.
BUS TOPOLOGY
Bus Topology is a bus pattern
connecting the computers and other
devices to the same communication
line. All devices are connected in a
line to a central cable, called the bus
or backbone. There is no central
computer or server. The data
transmission is bidirectional.
BUS TOPOLOGY
ADVANTAGES OF BUS
TOPOLOGY
 If one of the computer or devices should
stop working, this will not affect the
others
 Easy to connect or disconnect a
computer or peripheral to a linear bus.
 Requires less cable length than a star
topology.
DISADVANTAGES OF BUS
TOPOLOGY
 Cannot connect a large number of
computers this way.
 If the backbone cable fails, then the
entire network fails.
 Bus networks are slower than star
network
The End