Discuss advantages and
disadvantages of Bus, Ring and Mesh topologies
Ans
advantages
and disadvantages of Bus Topology
Advantages
▸ It is easy to set up, handle, and implement.
▸ It is best-suited for small networks.
▸ It costs very less.
Disadvantages
▸ The cable length is limited. This limits the number
of network nodes that can be connected.
▸ This network topology can perform well only for a
limited number of nodes. When the number of devices connected to the bus
increases, the efficiency decreases.
▸ It is suitable for networks with low traffic. High
traffic increases load on the bus, and the network efficiency drops.
▸ It is heavily dependent on the central bus. A fault
in the bus leads to network failure.
▸ It is not easy to isolate faults in the network
nodes.
▸ Each device on the network "sees" all the
data being transmitted, thus posing a security risk
advantages and disadvantages of Ring Topology
Advantages
▸ The data being transmitted between two nodes passes
through all the intermediate nodes. A central server is not required for the
management of this topology.
▸ The traffic is unidirectional and the data
transmission is high-speed.
▸ In comparison to a bus, a ring is better at handling
load.
▸ The adding or removing of network nodes is easy, as
the process requires changing only two connections.
▸ The configuration makes it easy to identify faults in
network nodes.
▸ In this topology, each node has the opportunity to
transmit data. Thus, it is a very organized network topology.
▸ It is less costly than a star topology.
Disadvantages
▸ The failure of a single node in the network can cause
the entire network to fail.
▸ The movement or changes made to network nodes affect
the entire network's performance.
▸ Data sent from one node to another has to pass
through all the intermediate nodes. This makes the transmission slower in
comparison to that in a star topology. The transmission speed drops with an
increase in the number of nodes.
▸ There is heavy dependency on the wire connecting the
network nodes in the ring.
advantages and disadvantages of Mesh Topology
Advantages
▸ The arrangement of the network nodes is such that it
is possible to transmit data from one node to many other nodes at the same
time.
▸ The failure of a single node does not cause the
entire network to fail as there are alternate paths for data transmission.
▸ It can handle heavy traffic, as there are dedicated
paths between any two network nodes.
▸ Point-to-point contact between every pair of nodes,
makes it easy to identify faults.
Disadvantages
▸ The arrangement wherein every network node is
connected to every other node of the network, many connections serve no major
purpose. This leads to redundancy of many network connections.
▸ A lot of cabling is required. Thus, the costs
incurred in setup and maintenance are high.
▸ Owing to its complexity, the administration of a mesh
network is difficult.
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