Presentation on theme: "NETWORK TOPOLOGY. WHAT IS NETWORK TOPOLOGY? Network Topology is the shape or physical layout of the network. This is how the computers and other devices."— Presentation transcript:
WHAT IS NETWORK TOPOLOGY? Network Topology is the shape or physical layout of the network. This is how the computers and other devices are linked together to form a network.
Main Types of Physical Topologies Ring Topology Star Topology Bus Topology
RING TOPOLOGY Ring Topology is a ring pattern which connects the computers and other devices in a circle. All devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it.
ADVANTAGES OF RING TOPOLOGY Requires less cabling and so it is less expensive Performs better than a bus topology under heavy network load Does not require network server to manage the connectivity between the computers
DISADVANTAGES OF RING TOPOLOGY If one node is down, then the entire network will not be able to function Moving, adding and changing of a computer or other devices can affect the network Ring networks are slower than star network
STAR TOPOLOGY Star Topology is a star pattern that connects everything to the host which is the computer that handles the network’s tasks and holds the data. All devices are connected to a hub (central device) forming a star.
ADVANTAGES OF STAR TOPOLOGY Easy to install and wire. No disruptions to the network when connecting or removing devices. Easy to detect faults and to remove parts or devices.
DISADVANTAGES OF STAR TOPOLOGY Requires more cable length than a linear topology. If the hub or concentrator fails, nodes attached are disabled. More expensive than linear bus topologies because of the cost of the concentrators.
BUS TOPOLOGY Bus Topology is a bus pattern connecting the computers and other devices to the same communication line. All devices are connected in a line to a central cable, called the bus or backbone. There is no central computer or server. The data transmission is bidirectional.
ADVANTAGES OF BUS TOPOLOGY If one of the computer or devices should stop working, this will not affect the others Easy to connect or disconnect a computer or peripheral to a linear bus. Requires less cable length than a star topology.
DISADVANTAGES OF BUS TOPOLOGY Cannot connect a large number of computers this way. If the backbone cable fails, then the entire network fails. Bus networks are slower than star network