Perfect Computer Notes

Topic: Advantages and Disadvantages of Ring Network Topology alongwith detailed working of Ring topology What Do You Mean by Ring Topology? In Ring topology, each computer is connected to the next computer such that last computer is connected to the first. Every computer is connected to next computer in the ring. Each computer retransmits what it receives from the previous computer. Suppose, computer A needs to send data to computer D. Now the computer A sends data to computer B. As computer B is not the destination computer, so it will retransmit data to computer C. Finally, Computer C will transfer data to computer D, the destination computer. When a node sends a message, the message is processed by each computer in the ring. If a computer is not the destination node, it will pass the message to the next node, until the message arrives at its destination. Advantages of Ring Network Topology 1. It is relatively less expensive than a star topology network. 2. In a Rin

Topic: Explain the Working Star Network Topology With Advantages and Disadvantages Star Topology Star Topology is the most popular and widely used network topology in local area networks . In star topology , all computers are connected with a central device known as HUB or Switch. Now-a-days Hubs are often replaced by Fast Network Switches. The working of Star Topology The sender computer sends data to the hub. The hub sends it to the destination computer. So, all data communication is managed through HUB or Switch. In a star network, each node (file server, workstations, and peripherals) is connected to a central device called a hub.  The hub takes a signal that comes from any node and passes it along to all the other nodes in the network. The star topology reduces the chance of network failure by connecting all of the systems to a central node. What is Star topology?  Advantages and Disadvantages of star topology Note: The major difference between a Network

Bus Topology Bus topology is the simplest network topology . In bus topology , all computers in network are connected to a common communication wire. This wire is called BUS. Terminators are used at both ends of wire. Bus Topology is Cheap, easy to handle and implement. Bus Topology require less cable. Bus Topology is best suited for small networks. Working of Bus Topology with Advantages and Disadvantages Advantages of Bus Network Topology 1. It is very simple topology . 2. It is easy to use. 3. It needs small amount of wire for connecting computers. 4. It is less expensive due to small wire needed. 5. If one computer fails, it does not disturb the other computers in network. Other computers will continue to share information and other resources with other connected computers. Disadvantages of Bus Network Topology 1. Only small number of computers can be connected in a bus network . 2. Network speed slows down as the number of computer increases in b