Network topology
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The document presents a seminar on network topology, discussing its definition, physical and logical layouts, and various types including bus, ring, star, and tree topologies. Each topology is explained with its advantages and disadvantages, highlighting aspects such as cost, performance, and ease of maintenance. The conclusion emphasizes the importance of understanding these topologies for effective computer networking design.
![REFERNCE
[1]http://www.ijetae.com/files/Volume3Issue1/I
JETAE_0113_84.pdf
[2] “Computer network and internets” by
Douglas E. Comer and M.S Narayanana
29-12-2015 DiST,Angamaly School of Management 24](https://image.slidesharecdn.com/networktopology-151229061736/85/Network-topology-24-320.jpg)
Network topology
- 2. DEPAULS INSTITUTE OF SCIENCE AND TECHNOLOGY , ANGAMALY SCHOOL OF MANAGEMENT SEMINAR “NETWORK TOPOLOGY” PRESENTED BY JENCY P.J NO: 25 29-12-2015 2
- 3. OUTLINE • INTRODUCTION • NETWORK TOPOLOGY • TYPES OF NETWORK TOPOLOGY • CONCLUSION • REFERNECE 29-12-2015 DiST,Angamaly School of Management 3
- 4. INTRODUCTION • Network : Interconnection of 2 or more independent computer and peripherals. • Topology : The way in which the computer are interconnected together. 29-12-2015 DiST,Angamaly School of Management 4
- 5. NETWORK TOPOLOGY • Network topology: Physical and logical layout of network. Physical topology: How the cables are used . Logical topology: How the messages travel 29-12-2015 DiST,Angamaly School of Management 5
- 6. TYPES OF NETWORK TOPOLOGY 29-12-2015 DiST,Angamaly School of Management 6 • Bus topology • Ring topology • Star topology • Tree topology
- 7. BUS TOPOLOGY • A bus topology is multipoint. • All computers and devices connected to central cable or bus. • Here one long cable act as a backbone to link all the devices are connected to the backbone by drop lines and taps. • Drop line- is the connection b/w the devices and the cable. • Tap- is the splitter that cut the main link. 29-12-2015 DiST,Angamaly School of Management 7
- 8. Cont.…. • It transmits data only in one direction. • Every device is connected to a single cable. • Consists of a main run of cable with a terminator at each end. 29-12-2015 DiST,Angamaly School of Management 8
- 9. Cont.…. Advantages • It is cost effective. • Cable required is least compared to other network topology. • Used in small networks. • It is easy to understand. • Easy to expand joining two cables together 29-12-2015 DiST,Angamaly School of Management 9
- 10. Cont.…. Disadvantages • Cables fails then whole network fails. • If network traffic is heavy or nodes are more the performance of the network decreases. • Cable has a limited length. • It is slower than the ring topology. Application • Most computer motherboard. 29-12-2015 DiST,Angamaly School of Management 10
- 11. RING TOPOLOGY • Cable forms closed ring or loop, with all computers and devices arranged along ring • Here each device has a dedicated connection with two devices on either side. • Data travels from device to device around entire ring, in one direction. • The signal is passed in one direction from device to device until it reaches the destination and each device have repeater. 29-12-2015 DiST,Angamaly School of Management 11
- 12. Cont.….. • A number of repeaters are used and the transmission is unidirectional. • Date is transferred in a sequential manner that is bit by bit. 29-12-2015 DiST,Angamaly School of Management 12
- 13. Dual ring topology Advantages • Speed and reliability • Un interrupted long distance communication • Terminators are not required 29-12-2015 DiST,Angamaly School of Management 13
- 14. Cont.…. Advantages: • Easy to install. • Easy to reconfigure. • Fault identification is easy. Disadvantages: • Unidirectional traffic. • Break in a single ring can break entire network. 29-12-2015 DiST,Angamaly School of Management 14
- 15. STAR TOPOLOGY • Here each device has a dedicated point-to- point link to the central controller called “Hub” • There is no direct traffic between devices • The transmission are occurred only through the central “hub”. 29-12-2015 DiST,Angamaly School of Management 15
- 16. Cont.… • Every node has its own dedicated connection to the hub. • Acts as a repeater for data flow. • Can be used with twisted pair, Optical Fibre or coaxial cable. 29-12-2015 DiST,Angamaly School of Management 16
- 17. Cont.… Advantages • Less expensive • Installation and configuration are easy. • Robustness • Easy to fault identification & to remove parts. • No disruptions to the network then connecting / removing devices 29-12-2015 DiST,Angamaly School of Management 17
- 18. Cont.… Disadvantages • Even it requires less cabling then mesh when compared with other topologies it still large • Dependency Applications • Star topology used in Local Area Network. • High speed LAN often used STAR. 29-12-2015 DiST,Angamaly School of Management 18
- 19. TREE TOPOOGY • Alternatively referred to as a star bus topology and hierarchical topology. • A tree topology connects multiple star networks to other star networks. • It has a root node and all other nodes are connected to it forming a hierarchy. • It should at least have three levels to the hierarchy. 29-12-2015 DiST,Angamaly School of Management 19
- 20. Cont.…. • Ideal if workstations are located in groups. • Used in Wide Area Network. 29-12-2015 DiST,Angamaly School of Management 20
- 21. Cont.…. Advantages • Extension of bus and star topologies. • Expansion of nodes is possible and easy. • Easily managed and maintained. • Error detection is easily done. 29-12-2015 DiST,Angamaly School of Management 21
- 22. Cont.…. Disadvantages • Heavily cabled. • Costly. • If more nodes are added maintenance is difficult. • Central hub fails, network fails 29-12-2015 DiST,Angamaly School of Management 22
- 23. CONCLUSION • Knowledge of networking topologies is of core importance of computer networking design. • which structure or topology is best for which organization or business. • Network Topology brings inherent advantages and disadvantages to any system under study. 29-12-2015 DiST,Angamaly School of Management 23
- 24. REFERNCE [1]http://www.ijetae.com/files/Volume3Issue1/I JETAE_0113_84.pdf [2] “Computer network and internets” by Douglas E. Comer and M.S Narayanana 29-12-2015 DiST,Angamaly School of Management 24