it is about Computer Network Topologies ,in which way data communication can be processed,How the computer systems are connected to each other ,How the data can be transformed from one computer to another through the connection

1. COMPUTER NETWORK
TOPOLOGIES
Prepared By
P.POORNA CHANDU
B.GURU SAI
T.NAGA SHESHU

2. What is a Topology?
0 Network Topology is the schematic description of a
network arrangement, connecting various
nodes(sender and receiver) through lines of
connection.
0 Network topologies describe the ways in which the
elements of a network are mapped. They describe the
physical and logical arrangement of the network
nodes.

3. Different Types of Topologies
0Bus Topology
0Ring Topology
0Star Topology
0Mesh Topology
0Hybrid Topology
0Tree Topology

4. Bus Topology
0 Bus topology is a network type in which every
computer and network device is connected to single
cable
0 it has exactly two endpoints, then it is called Linear
Bus topology, All nodes (file server, workstations, and
peripherals) are connected to the linear cable

5. Bus Topology

6. Bus Topology
Advantages of Bus Topology
0It is Cheap, easy to handle and implement
0Require less cable
0It is best suited for small networks
Disadvantages of Bus Topology
0Cable has a limited length.
0It is slower than the ring topology
0Cables fails then whole network fails

7. Ring Topology
0 In a ring network, every device has exactly two
neighbours for communication purposes
0 It is called ring topology because it forms a ring as
each computer is connected to another computer,
with the last one connected to the first

8. Ring Topology

9. Ring Topology
Advantages of Ring Topology
0Easier to Mange than a Bus Network
0Good Communication over long distances
0Handles high volume of traffic
Disadvantages of Ring Topology
0The failure of a single node of the network can
cause the entire network to fail
0Adding or deleting the computers disturbs the
network activity

10. Star Topology
0 In this type of topology all the computers are
connected to a single hub through a cable. This hub is
the central node and all others nodes are connected to
the central node
0 The hub takes a signal that comes from any node and
passes it along to all the other nodes in the network

11. Star Topology

12. Star Topology
Advantages of Star Topology
0Fast performance with few nodes and low
network traffic.
0Hub can be upgraded easily
0Only that node is affected which has failed, rest of
the nodes can work smoothly
Disadvantages of Star Topology
0Cost of installation is high
0If the hub fails then the whole network is stopped
because all the nodes depend on the hub

13. Mesh Topology
0 It is a point-to-point connection to other nodes or
devices. All the network nodes are connected to each
other
0 In this type of network, each node may send message
to destination through multiple paths
0 The data is automatically configured to reach the
destination by taking the shortest route.

14. Mesh Topology

15. Mesh Topology
Advantages of Mesh Topology
0Each connection can carry its own data load
0Provides security and privacy
0It has multiple links, so if one route is blocked
then other routes can be used for data
communication
Disadvantages of Mesh Topology
0Installation and configuration is difficult.
0Cabling cost is more

16. Hybrid Topology
0 A combination of any two or more network
topologies.
0 For example if in an office in one department ring
topology is used and in another star topology is used,
connecting these topologies will result in Hybrid
Topology (ring topology and star topology).

17. Hybrid Topology

18. Hybrid Topology
Advantages of Hybrid Topology
0Reliable as Error detecting and trouble
shooting is easy.
0Effective
0It is extremely flexible
Disadvantages of Hybrid Topology
0Complex in design.
0Costly

19. Tree Topology
0 It has a root node and all other nodes are connected to
it forming a hierarchy. It is also called hierarchical
topology. It should at least have three levels to the
hierarchy.
0 The tree topology arranges links and nodes into
distinct hierarchies in order to allow greater control
and easier troubleshooting

20. Tree Topology

21. Tree Topology
Advantages of Tree Topology
0Extension of bus and star topologies.
0Expansion of nodes is possible and easy.
0Easily managed and maintained.
0Error detection is easily done
Disadvantages of Tree Topology
0If the backbone line breaks, the entire segment
goes down.
0Heavily cabled.
0Costly

22. THANK YOU
ALL