1. Network Topologies
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2. Network Topologies
“ The way in which the connections are made among all the
computers is called the topology of the network
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3. Types of Network Topology
Three (3) basic types of network topology:
 Bus topology.
 Star topology.
 Ring topology.
Bus Network
Star Network
Ring Network
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4. Types of Network Topology
 Bus Topology.
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A bus network consists of a single central cable (backbone),
to which all computers and other devices connect (nodes).

5. Bus Network Topology
Working of Bus Network Topology:
T-Connector
Terminator
Backbone
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6. Bus Network Topology
Advantages of Bus Network:
i. Bus networks are inexpensive.
ii. Easy to use
iii. Failure of one device usually does not affect the rest of
the bus network.
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7. Bus Network Topology
Disadvantages of Bus Network:
i. Network disruption might occur when computer or other devices
are added or removed.
ii. Because all systems on the network connect to a single cable or
backbone, a break in the cable will prevent all systems from
accessing the network.
iii. It is difficult to identify the problem if the entire network shut
down.
iv. If number of computer increase,speed of network will b slow.
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8. Ring Network Topology
Ring Network Topology:
 On a ring network, a cable forms a closed loop
(ring) with all computers and devices arranged
along the ring.
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9. Ring Network Topology…cont.
Data transmitted on a ring network travels from device to device
around the entire ring, in one direction.
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10. Ring Network Topology
Advantages of Ring Network:
i. The transmission of data is relatively simple as packets
travel in one direction only.
ii. Cable faults are easily located, making troubleshooting
easier.
iii. Every computer has equal access to network.
iv. Less expensive.
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11. Ring Network Topology
Disadvantages of Ring Network:
i. A failure in any cable or device breaks the loop and can
take down the entire network.
ii. Data packets must pass through every computer
therefore, this makes it slower.
iii. A ring network can span a larger distance than a bus
network, but it is more difficult to install.
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12. Types of Network Topology
• Star Topology.
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A devices that provides a common central
connection point for nodes on the network is hub.

13. Star Network Topology
Working of Star Network Topology:
Hub
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14. Star Network Topology…cont.
Hub:
 A device that provides a common central connection
point for other devices on a network.
 All data that transfer from one device to another passes
through the hub.
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15. Star Network Topology
Advantages of Star Network:
i. If one device fails, only that device is affected.
ii. Devices can be added to or removed from network with
little or no disruption.
iii. Easy to troubleshoot and isolate problem.
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16. Star Network Topology
Disadvantages of Star Network:
i. If the hub fails, the entire network will be inoperable
ii. More expensive because the cost of the hub.
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Case Study 1
MoneyMaker Bank at Mumbai want to implement a network at their
office.They have good budget so they can afford costly network. Their
requirments are time to time connectivity is easily available in short period
of time and minimum amount of problems in the network because they do
not afford disturbance in network .There are 30 employs in the office and
everyone can easily access to others and share information.

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Problem
Need to select topology that fulfill their network needs.

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Suggested Solution
• Bus topology
• Ring topology
• Star topology

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