NETWORK TOPOLOGIES
BUS · STAR · RING
prostudypk.com
How Computers Connect
SWITCH
A
B
C
D
E
data packet: A → D
topology
packet path
weak point
1. Network Topology
The layout for connecting computers with cables and devices
It changes speed, cost and reliability
2. Compare
Bus
one main cable, cheap
cable cut → everything stops
Star
every PC to the switch
switch fails → everything stops
Ring
data in one direction
one link breaks → the ring stops
3. Remember
Star is the most widely used
A home Wi-Fi router = centre of a star
MATRIC COMPUTER · NETWORKS · PUNJAB BOARDS
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