Network Systems Identify network systems and their components.

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Presentation transcript:

Network Systems Identify network systems and their components

FIT03.01 Explain network topologies and their evolution

Network Topology Refers to shape of a network, or the network’s layout How different nodes in the network are connected to each other How they communicate Topologies are either physical or logical.

Basic Components of a Network Sharing Either resources or information has to be shared Line of communication Transmission media Wire technology Wireless technology Rules Governed by protocols An agreed upon format of signals for sending data between two components

Bus Topology Network Has been around longer than any other type The attraction of the bus network is its simplicity A bus is simply the path data takes to move from one location to another The disadvantage is that they are difficult to manage In network topology, it refers to a layout that connects all devices in line with one another Bus Topology

Star Topology Network Several computers or other devices interconnect to one another over a hub What makes the star such a beautiful concept is that it is modular It can be made as big and complex as you want A disadvantage may be the complex cabling scheme Star Topolog y

Ring Topology Network A circle or ring of computers connected by a cable There are no terminated ends of the cable The signal travels around the circle in a clockwise direction A signal is transferred sequentially via a “token” from one station to the next Ring

Mesh Topology Every device on the network is physically connected to every other device on the network The mesh can be either a full mesh or a partial mesh The full mesh is where everybody talks to everybody In the partial mesh, there are a few nodes that connects to all others Four Node Mesh Network

Tree Topology Each device is connected to its own port on a concentrator in the same manner as in a Star Concentrators are connected together in a hierarchical manner

Star Wired Ring

Evolution of the Network Several factors have affected the evolution of Computer Communication since the early 1960s. The growth of the computer industry Stand-alone computers with printers attached Replacing old printers on a LAN with high- speed network printers

Future Implications for the Network The main advantage of Networking is the capability to share resources. Files, printers, fax, and the Internet are all resources. Each user/computer on the network has the potential to access data stored on other machines. Expensive peripherals such as color laser printers can also be shared rather than one machine using a printer on its own.