Perfect Computer Notes

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

Today, we will types of network topology . What is a Network Topology? Definition of Network topology is the shape of the network . It is the physical layout of connected devices in a network. It tells us how a network will look like. Network Topology ( Definition 2) : The way in which the connections are made among all the network entities is called the topology of the network. Network Topology ( Definition 3) :Network topology specifically refers to the physical layout of the network, e.g., the location of the computers and how the cable is run between them. Network Topology ( Definition 4) :The physical topology of a network refers to the configuration of cables, computers, and other peripherals. The characteristics of a network depend upon the network topology selected. types of network topology Explain different types of network Topology Different network topologies are as follows: 1. Bus Topology 2. Ring Topology 3. Star Topology 4. Tree Topolo