What do you mean by network topology? Explain star topology with a diagram.-COMPUTER 12-NEB-2081

 Network Topology

 Network topology refers to the arrangement or layout of various elements (nodes, links, etc.) in a computer network. It describes how devices such as computers, switches, routers, and servers are interconnected and how data flows between them. Understanding network topology is crucial for designing, managing, and troubleshooting networks.

 Types of Network Topologies

Some common types of network topologies include:

- Bus Topology 

- Ring Topology 

- Mesh Topology 

- Tree Topology 

- Hybrid Topology 

- Star Topology 

 Star Topology

 Star topology is one of the most popular network configurations. In a star topology, all nodes (devices) are connected to a central device, often referred to as a hub or switch . The central device acts as a mediator for data transmission between nodes.

 # Characteristics of Star Topology

1. Centralized Management : The hub/switch serves as the central point for managing data flow and network resources.

2. Scalability : New devices can be easily added to the network without disrupting existing nodes.

3. Failure Isolation : If one connection or device fails, it does not affect the rest of the network, making it easier to troubleshoot.

4. Performance : Performance can be improved since each device has a dedicated link to the hub.

 # Diagram of Star Topology

 Explanation of the Diagram

- Hub/Switch : The central device that connects all the other devices. It manages communication between them.

- Devices : These can be computers, printers, or any other devices connected to the network. Each device has its own dedicated connection to the hub.

- Connections : The lines represent the physical or logical connections between the hub and the devices.

 Advantages of Star Topology

- Easy to Install and Configure : Setting up a star network is straightforward.

- Fault Tolerance : Individual device failures do not impact the overall network.

- Centralized Control : Easier management of network resources and monitoring.

 Disadvantages of Star Topology

- Single Point of Failure : If the hub/switch fails, the entire network goes down.

- Cost : Requires more cabling than other topologies, which can increase installation costs.

 Conclusion

Star topology is widely used in local area networks (LANs) due to its simplicity and robustness. Understanding its structure and characteristics is essential for network design and management.