Network Topology :
The physical arrangement of modes in a network is called network topology. This defines the structure of a network. It means how the modes or computer are physically situated in the network.
Types :
The types of Network topology are :
1. Bus Topology
2. Ring Topology
3. Star Topology
4. Tree Topology
5. Mesh Topology
6. Hybrid Topology
1. Buys Topology :
Bus networks use a single networking or connecting wire called backbone to which all the node or computers are peripheral devices are attached.
Advantages :
i) Easier to construct
ii) Cheaper than to other networks
iii) Less noise in data transmission.
Disadvantages :
i) If one computer or backbone is demaged than whole system/network failed.
ii) More management cost.
2. Ring Topology :
The ring topology connects the nodes of network in a circular chain with each node connected to the next. The final node in the chain is connected the ring.
Advantages :
i) Connection structure is simple
ii) Less costly to other network.
iii) Less chance of collision.
Disadvantages :
i) It is unreliable.
ii) If the connection is broker than the network is collapse.
3. Star Topology :
In this topology all computers arev connected to a central switch called HUB. A HUB is the central centrolling device.
Advantages :
i) Intelligent HUB can monitor traffic and helps to privent collision.
ii) In star topology broker, connection cannot effect the whole network.
Disadvantages :
i) If the HUB is demaged the whole network collapse.
4. Tree Topology :
Tree is used multipoint link. Nodes ia a tree are linked to a central HUB that controls the traffic to the network. Not every devices plug directly into the central HUB. Majority devices are connected to secondary HUB.
Advantages :
i) Les expensive than mesh topology.
ii) Easy to installation and reconfigureation.
iii) Include robustness.
iv) Easy to fault isolation and fault identification.
Disadvantages :
i) More cable is reguired than ring and bus topology.
5. Mesh Topology :
The types of topology where each nodes are directly connected with another nodes.
Advantages :
i) Most reliable.
ii) Each computer is connected another without any disturbing.
Disadvantages :
i) Costly
ii) Difficult to construct.
6. Hybrid Topology :
Here, a pure star or ring or completely connected network is rarely used. Instead, an organization will use some sort of hybrid network,which is a combination of two or more different network topologies.
Advantages :
i) It is reliable.
ii) Less cheaper of collision.
Disadvantages :
i) More expensive
ii) Difficult to construct.