The document discusses different network topologies including bus, ring, star, and mixed/mesh. It provides advantages and disadvantages of each topology. A bus topology is cheap and easy to implement but causes disruption if devices are added or removed. A ring topology is easier to troubleshoot but a single break disrupts the whole network. A star topology is easily expanded without disruption but has a single point of failure. A mixed topology provides redundancy but has a complicated implementation.

1. NETWORK TOPOLOGIES
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2. Network Topologies
TOPOLOGY
Physical network layout
Logical network layout
• Actual layout of the
• The way in which the
computer cables and other
network appears to the
network devices
devices that use it
COMMON TOPOLOGIES
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Bus
Ring
Star
Mixed/mesh
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3. Bus Topology
ADVANTAGES
DISADVANTAGES
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Cheap and easy to implement
Requires less cable
Does not use any specialized
network equipment
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Causes network disruption if you
add or remove computers or if the
cable is faulty
Difficult to troubleshoot
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4. Ring Topology
ADVANTAGES
DISADVANTAGES
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Cable faults are easily located,
making troubleshooting easier.
Ring networks are moderately
easy to install.
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Expansion to the network can
cause network disruption.
A single break in the cable can
disrupt the entire network.
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5. Star Topology
ADVANTAGES
DISADVANTAGES
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Easily expanded without
disruption to the network. For
example, a cable failure affects
only one user.
Easy to isolate and
troubleshoot problems
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Requires more cable than other
topologies
Allows for a single point of
failure via a central connecting
device
More difficult to implement
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6. Mixed Topology
ADVANTAGES
DISADVANTAGES
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Provides redundant paths
between devices
Can be expanded without
disruption to current users
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Requires more cable than the
other LAN topologies
Has a complicated
implementation
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