This is a presentation about network topologies and network devices. they are also described by images for better underastanding.

1. Network topologies
By: Anam jabeen

2. DEFINITION
• What is a Topology ?
• The physical topology of a
network refers to the
configuration of cables,
computers and other
peripherals.

3. Types of Topologies
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Bus topology
Ring topology
Star topology
Mesh topology
Tree topology
Hybrid topology

4. Bus Topology
• Popular on LANs because they
are inexpensive and easy to
install.
• Consists of a main run of cable
with a terminator at each end
• All computers and devices
connected to central cable or
bus.

5. Bus topology

6. Ring Topology
• Primarily is used for LANs,
but also is used in WANs.
• Data travels from device to
device around entire ring, in
one direction.
• Cable forms closed ring or
loop, with all computers and
devices arranged along ring.

7. Ring Topology

8. Star Topology
All devices connect to a
central device, called
hub.
All data transferred
from one computer to
another passes through
hub.

9. Star Topology

10. Mesh Topology
• A network setup where each
computer and network device is
interconnected with one another.
• This topology is not commonly
used for most computer networks
as it is difficult and expensive.

11. Mesh Topology

12. Tree topology
• A tree topology combines the
characteristics of bus and star
topologies.
• It consists of different groups of
computers attached in star topology.
• The groups are then connected to a
bus backbone cable.
• Tree topology is used for the
expansion of an existing network.

13. Tree topology

14. Hybrid Topology
• A combination of two or more different
topologies makes a hybrid topology.
• One of the prominent advantages of this
topology is its flexibility
• Since different topologies come together
in a hybrid topology, managing the
topology becomes difficult.
• It is also very expensive to maintain.

15. Hybrid Topology