ICT Network Topology

•Network topology is the schematic
description of the arrangement of the

physical and logical elements of a

communication network.

NETWORK TOPOLOGY

TYPES

•

BACKBONE

•

CONNECTS ALL
DEVICES TO A MAIN
CABLE

•

LOOP OF CABLE

• BUS NETWORK

•The most common

network topology.

•Star topology connects each
device in the network to a

central hub.

• Devices can only
communicate with each other
indirectly through the central
hub.

Advantages and Disadvantages

Advantages

It is the It works very

easiest efficient

network topology for well when there is a
connecting peripherals small network.
or computers in a linear
fashion. It is easy to
understand
Very cost-
effective topology.

as compared to other
network topology.

Easy to

expand by

joining the two
cables together

Disadvantages

Bus topology is not Packet loss is
great for large
networks. high

Troubleshooting Need of

of individual device terminators

issues is very hard. are required at
both ends of main
Additional cable
devices slow
network down.

Advantages

It is cheap to Speed to transfer

install and expand. the data is very

high.

Minimum Easy to
collision manage

Equal access

to the resources

Disadvantages

It is slower in Addition and
removal of any
performance node during a

as compared to the network is difficult
bus topology
and may cause

issue in network

activity

It is In order for all the
computer to
Expensive. communicate
with each other,
Difficult to all computer

troubleshoot. must be
turned on

Advantages

very reliable. Easy fault
detection
(if one cable or
device fails then all because the link are
the others will still often easily
work) identified.

Easier to put in. No
disruptions to

the network when
connecting or
removing devices.

Robust in nature.

Disadvantages

Requires more If hub goes down
cable than a everything goes
down, none of the
linear bus
devices can work
without hub.

More If the connecting
expensive than network device
(network switch)
linear bus topology fails, nodes
due to the value of attached are
the connecting
devices (network disabled and
switches)
can’t participate
Extra
hardware is in network
communication.
required (hubs or
switches) which
adds to cost