networktopology

NETWORK		NETWORK ARCHITECTURE	NETWORK TOPOLOGY
Network Topology Definition: layout of the computers and devices in a communications network
Type of network topology	Bus Network Topology	Ring Network Topology	Star Network Topology
Definition	Network that consists of a single central cable to which all computers and others devices connect	Networkwhere a cable forms a closed loop with all computers and devices arranged along the ring	All the computers and other devices on the network connect to acentral device thus forming a star
Description	each device is connected to the bus cable through T-connector Terminator prevent signal from bouncing back and forth on the bus cable		two types of devices that provide a common central to all the ther devices on the network are hub and switch
Data transmit	Transmits data, instructions and informations as a series of signals i both direction where all nodes receive signal but only the recipient will accept the signal	Daa travels the entire ring in one direction and reach its destination by using token	Data transfers from one node to another node passing through hub/switch
Advantages	Failure in one device does not affect the rest of bus network Inexpensice and easy to install Devices can be attacherd or removed without disturbing the system	All computers have equal access to resources in the network Cable faults are easily located The uses of tokens enables al share network resources fairly	If one device fails, only that device is affected Devices can be added and removes with little distruption Easy to troublehshoot
Disadvatages	The network will malfunction if the backbone breaks down The break will prevent all systems from accessing the network The performance of network will slow down if more computers are added bcs of data collision	Network malfuction if device breaks down Difficult to install Data packets must pass through every computer making it slower	Network will malfunction if hub/switch breaks dow Requires more cable cost than other topologies