star ring tree and mesh topologies .pptx

Network topology
The physical layout or arrangement of connected devices in a network
Types of topologies
1 Bus Topology
2 Ring Topology
Each computer is connected to the next computer with the last one connected to the first.
Thus, a ring of computers is formed.
3 Star Topology
All computers in star topology are connected with a central device called hub or switch.
4 Tree Topology
Combines characteristics of bus and star topologies.
Consists of different groups of computers attached in star topology.
Groups are then connected to a bus backbone cable.
5 Mesh Topology
Every device in the network is physically connected to every other device in the network.

1. Star Topology All computers in star topology are connected with a central device called hub or switch. Mostly used in client-server networks.

2. Working of Star Network The sending computer sends data to the central device. The central device sends data to the receiving computer. Each computer in star network communicates with a central device.

3. Advantages of Star Topology

4. Disadvantages of Star Topology

5. Ring Topology Each computer is connected to the next computer with the last one connected to the first. Thus, a ring of computers is formed. The ring topology can be bidirectional or unidirectional. If it is unidirectional it will clockwise or anticlockwise its direction never change

6. Working of Ring Network Each computer is connected to the next computer in a ring. Each computer receives a message from the previous computer and transmits it to the next computer. The message flows in one direction. The message is passed around the ring until it reaches the correct destination computer.

7. Advantages of Ring Topology

8. Disadvantages of Ring Topology

9. Tree Topology Combines characteristics of bus and star topologies. Consists of different groups of computers attached in star topology. Groups are then connected to a bus backbone cable. Used for the expansion of an existing network.

10. Advantages of Tree Topology

11. / Disadvantages of Tree Topology

12. Mesh Topology Every device in the network is physically connected to every other device in the network. A message can be sent on different possible paths from source to destination. Provides improved performance and reliability. Mostly used in wide area networks.

13. Advantages and Disadvantages of Mesh Topology If one device on a mesh network fails, the network can still function. Performance is not affected with heavy load of data transmission. Easy to troubleshoot. A full mesh network can be very expensive. Difficult to install and reconfigure.