HUB Computer Printer Figure . STAR Topology In this type of topology all the computers are connected to a single hub/switch through cables. This hub is the central node and all others nodes are connected to the central node. Features of Star Topology .
In this type, every node has its own dedicated connection to the hub. . The hub acts as a repeater for data flow. Advantages of Star Topology .
The performance is fast with few nodes and low network traffic. . The hub can be upgraded easily. .
It is easy to troubleshoot, to setup and modify. . Only the failed node will get affected, and the rest will work smoothly. TREE Topology This type of topology is arranged in the form of a tree like structure in which top level contains parent node (root node), which is connected with the child nodes in the second level of hierarchy.
The second level nodes are connected to the third level nodes, which in turn are connected to the fourth level nodes and so on. Except the top-level nodes, each level node has a parent node. It is also called hierarchical topology . Figure .
Tree Topology Features of Tree Topology . It is ideal if workstations or nodes are located in groups. . It can be used in Wide Area Network.
Advantages of Tree Topology . The expansion of nodes is possible in this type. . It can be easily managed and maintained.
. The error detection can be done easily. Workshop- Go to your Computer laboratory and identify the type of topology followed there. Seek help from your teacher.
. . Types of Network . .
. Computer Networks are classified into four types based on the size, distance and the structure namely: LAN (Local Area Network), MAN (Metropolitan Area Network), WAN (Wide Area Network) and PAN (Personal Area Network). Personal area network • A personal area network, or PAN, is a computer network that enables communication between computer devices. • PANs can be wired, such as USB or FireWire, or they can be wireless, such as infrared, ZigBee, Bluetooth and ultra wide band (UWB).
• The range of a PAN typically is a few meters. Examples of wireless PAN (WPAN) are devices include cell phone ,headsets, wireless keyboards, wireless mice, printers, bar code scanners and game consoles. LAN (Local Area Network) • A Local Area Network is a privately owned computer network covering a small Network geographical area , like a home, office, or groups of buildings e.g. a school Network.
• We can use different types of topologies through LAN. • LAN networks are also widely used to share resources like printers, shared hard-drive etc. • The size of LAN is usually small. The various devices in LAN are connected to central devices called Hub or Switch using a cable.
• Now-a-days LANs are being installed using wireless technologies. • LAN offers high speed communication of data rates between to megabits per second (Mbps).