The document summarizes different network topologies including bus, ring, and star. It describes the key characteristics of each topology such as how the devices are connected and how data is transmitted. Bus topology connects all devices in a series to a single cable, while ring topology connects each device in a circular ring. Star topology connects all devices to a central hub or switch. The document discusses the advantages and disadvantages of each topology, such as ease of use versus cost and ability to expand the network.

1. Network

2. Presented to : Ma’am Tayyaba
Presented by: Faiza Afzal
Rimsha Azmat
Anum Khalid
Sheeza Kanwal
Qaswa Zahra
Mahnoor Azam

3. Contents:
• Network Topologies
• Transmission Media
• Internetworking Devices

4. Network Topologies

5. Introduction to Topology
• The layout of the wire and connected
devices in a network.
• The paths used by data transmissions.
• The way in which computers, printers or
other devices are connected.

6. Types of Topologies
• Bus Topology
• Ring Topology
• Star Topology
• Tree Topology
• Mesh Topology

7. Bus Topology
• Bus topology is the simplest topology and supports a small
number of computers.
• In a bus topology each computer or server is connected in
series to a single cable hence all the nodes share the same
communication channel.

8. Bus Topology

9. Conti…
Advantage
• Cheap and easy to use.
• It is less expensive.
• Requires less cable.
Disadvantage
• It only supports small
number of computers.
• If number of computers
increases, network speed
will slow down.

10. Ring Topology
• The ring topology is like a bus topology but the end of the
network is connected to the first node.
• Each computer is connected to the next computer in a ring.
The message transmits to each computer and passes
around the ring until it reaches the correct destination.

11. Ring Topology

12. Conti…
Advantage
• It is less expensive than
star topology.
• Rings topology is easy to
install.
Disadvantage
• The failure of one
computer in the ring can
affect the whole network.
• Adding or removing
computers affects the
whole network.

13. Star Topology
• All computers are connected with the central device like a
hub or switch.
• The sending computer sends the data to central device that
sends data to receiving computer.
• Each computer communicates with a central device called
hub.

14. Star Topology

15. Conti…
Advantages
• Easily expanded without
disturbing the network.
• Cable failure affects only a
single user.
• Finding the faults becomes
very simple.
Disadvantages
• Requires more cable.
• A central connecting
device allows for a single
point of failure.
• It is more expensive.

16. Thank you