2. TopicNetwork Topologies and its Types 3. CONTENTDefinition ofNetworkDefinition ofNetwork TopologyTypes ofNetwork TopologyThe Advantages and Disadvantages of Network TopologyNETWORK TOPOLOGY NETWORK STAR TOPOLOGY BUS TOPOLOGY RING TOPOGY 4. DEFINITIONWhat is a Network ?A computer network consist of two or more computers thatare linked together in order to share information and othershare resources.The computers on a network may linked through cable,telephone lines and satellites etc. 5. DEFINITIONWhat is a Topology?In networking, the term topology is the way ofconnecting computers or nodes on a network.The way in which computers or other devicesare connected in a network is called NetworkTopology. 6. TYPES OF NETWORK TOPOLOGYThree commonly used network topologiesare:-Bus network.Ring network.Star network. 7. STAR TOPOLOGYAll devices connect to acentral device, calledhub.All data transferredfrom one computer toanother passes throughhub. 8. STAR TOPOLOGY 9. STARADVANTAGEDISADVANTAGE1) Easy to install and wire. 1) Requires more cable length than a linear topology.2) If any node or cable fails, 2) If the hub or concentrator other nodes are not effected.fails, nodes attached aredisabled.3) Easy to detect faults and to3) More expensive than linear remove parts.bus topologies because of the cost of the hubs. 10. BUS TOPOLOGYAll computers and devicesconnected to central cable or bus.The central cable is the backbonecable.The devices or nodes are attachedwith the bus through interfaceconnecter. 11. BUS TOPOLOGYUSERUSER USER USER USERUSER USER USER USERUSER 12. BUSADVANTAGE DISADVANTAGE1) Easy to connect computer or1) Entire network shuts down if peripheral to a linear bus. there is a break in the main cable.2) Requires less cable length 2) Terminators are required at than a star topology. both ends of the backbone cable.3) If one node fails, other nodes 3) Difficult to identify the are not effected. problem if the entire network shuts down. 13. RING TOPOLOGYIn ring topology, each computer isconnected to the next computerand the last is connected to thefirst.Data travels from device todevice around entire ring, inone direction.In this way, the last nodeconnects to the first tocomplete the ring. 14. RING TOPOLOGY 15. RINGADVANTAGEDISADVANTAGE1) It is less expensive than 1)Adding or removing a star topology.computer from network effects the whole networks.2) It is easy to install and to2) If any of the nodes fail then the maintain.ring is broken and data cannotbe transmitted successfully. 3) It is difficult to troubleshoot the ring.