A network topology is the physical and logical arrangement of nodes and connections in a network.  Nodes usually include devices such as switches, routers and software with switch and router features. Network topologies are often represented as a graph.

1. Welcome To Our
presentation

2. Dhaka International University
21 April 2024
Department of English
Course Name: Fundamentals of Computer
Course No: 0611-1105
Batch: 54
th
Semester: 1st
Computer Network Topology
Created By:
Mst: Nadia khatun
Roll:48
Mohammad Atiq
Roll:40
Tajrin Akter
Roll:32

3. Course Teacher
Name: Sumon Ahemed Saikan
Title: Lecturer
Department: Computer Science and Engingeering

4. Outline

5. Introduction
• A network topology is the
physical and logical
arrangement of nodes and
connections in a network.
Nodes usually include devices
such as switches, routers and
software with switch and
router features. Network
topologies are often
represented as a graph.

6. Topology
Types

7. Point to Point Topology
A point-to-point topology is any network that connects two hosts in a dedicated
fashion. For example, if you were to configure a router in Miami, Florida, to
connect and use resources on a network in Atlanta, Georgia, you would want to
make sure you had a link between them that can support your needs.
Sender Receiver
Fig 3: P2P Topology

8. Star Topology
A star topology, sometimes known as a star network, is a network topology in which each
device is connected to a central hub. It is one of the most prevalent computer network
configurations, and it's by far the most popular Network Topology. In this network arrangement,
all devices linked to a central network device are displayed as a star.
Fig 4: Star Topology

9. Star Topology Cont…
• Advantage:
• 1.Less expensive.
• 2.Easy to install and reconfiguration.
• 3.Robustness
• Disadvantage:
• 1.Failure of central hub will effect the entire network.
• 2.Performance is based on the single concentrator i.e. hub.

10. Ring Topology
• A ring topology is a network
configuration where device connections
create a closed circular data path. Each
networked device is connected to two
others, like points that form a circle.
Together, devices in a ring topology are
called a ring network.
Fig 5: Ring Topology

11. Ring Topology Cont…
Advantage:
1. The data transmission is high-speed.
2. The possibility of collision is minimum in this type of topology.
3. Cheap to install and expand.
4. It is less costly than a star topology.
Disadvantage:
1. The failure of a single node in the network can cause the entire network to fail.
2. Troubleshooting is difficult in this topology.
3. Less secure.

12. Bus Topology
Bus topology carries transmitted data through the cable because data reaches each node, the
node checks the destination address (MAC/IP address) to determine if it matches their address.
If the address does not match with the node, the node does nothing more. But if the addresses of
nodes match to addresses contained within the data then they process knowledge. In the bus,
communication between nodes is done through a foremost network cable.
Fig 6: Bus Topology

13. Bus Topology Cont…
Advantage:
1.Coaxial or twisted pair cables are mainly used.
2.The cost of the cable is less compared to other topologies.
3.Bus topology is familiar technology as installation and troubleshooting
techniques are well known.
●
Disadvantage:
1.If the common cable fails, then the whole system will crash down.
2.Adding new devices to the network would slow down networks.
3.Security is very low.

14. Tree Topology
• A tree topology is a sort of structure
in which each node is related to the
others in a hierarchy. In a topological
hierarchy, there are at least three
distinct levels. Sometimes it is also
called hierarchical topology as in this
topology, all elements are arranged
like the branches of a tree. It is a lot
like the star and bus topologies.
Fig 7: Tree Topology

15. Tree Topology Cont…
Advantage:
1. It allows more devices to be attached to a single central hub thus it
decreases the distance that is traveled by the signal to come to the
devices.
2. We can add new devices to the existing network.
3. Error detection and error correction are very easy in a tree topology.
Disadvantage:
1. If the central hub gets fails the entire system fails.
2. The cost is high because of the cabling.
3. If new devices are added, it becomes difficult to reconfigure.

16. Mesh Topology
• Mesh topology is a type of
networking in which all the
computers are inter-connected
to each other. In Mesh
Topology, the connections
between devices take place
randomly. The connected nodes
can be computers, switches,
hubs, or any other devices. In
this topology setup, even if one
of the connections goes down, it
allows other nodes to be
distributed.
Fig 8: Mesh Topology

17. Mesh Topology Cont…
Advantage:
1. Dedicated link ensure that each connection carry its own data load,
eliminating the traffic problem.
2. Mesh topology is robust.
3. Provides privacy & security.
4. Fault identification and isolation is easy.
Disadvantage:
1. Huge amount of cabling and I/O ports required.
2. Installation and reconnection is difficult.

18. Discussion
•This is my First presentation. I've
learnt many things from
this presentation. I couldn't have
done this presentation without the
support of my team members. I feel
very proud for completing
our presentation.

19. • https://www.javatpoint.com/what-is-mesh-topology
• https://www.geeksforgeeks.org/advantages-and-
disadvantages-of-bus-topology/
• https://www.sciencedirect.com/topics/computer-
science/point-topology
• https://www.techtarget.com/searchnetworking/definition/
network-topology
References

20. Thank you