Network
Section titled “Network”A network is a group of interconnected devices that communicate and share resources with each other.
Network Topologies
Section titled “Network Topologies”Devices (or stations) can be connected in different ways to form a network. Each has its own advantages and disadvantages. The appropriate topology must be chosen based on the requirements such as:
- cost
- reliablity
- expandability
- performance
Bus Topology
Section titled “Bus Topology”All devices are connected to a single cable aka. a bus. The bus acts as a shared communication channel. Supports full duplex communication. Simple and easy to implement. Can be difficult to troubleshoot and maintain.
Stations tap into the bus. Terminators are placed at either ends to absorb reflections and prevent signal degradation.
Tree Topology
Section titled “Tree Topology”An extension to the bus topology. Devices are connected to a bus. There will be multiple buses, each with its own terminator. All buses will connect to the headend.
Ring Topology
Section titled “Ring Topology”A set of repeaters joined with point-to-point links in a closed loop. Unidirectional transmission by repeaters. Each station is attached to the network at a repeater.
Data transmitted as frames. Destination recognizes and reads data. Removed at source after full circulation.
Star Topology
Section titled “Star Topology”One station is a logical communication center. Works as broadcast (hub) or frame-switching device (switch). All communication passes through the central station.