Ring Topology, Hybrid Topology and Wirless Topology

Hi friends now we discuss about ring and hybrid topologies in detail.
  
RING TOPOLOGY
A ring topology connects one host to the next and the last host to the first. This creates a physical ring of cable. A signal is passed along the ring in one direction from device to device, until it reaches the destination. Each devices can incorporates with the repeater.

Advantages

• It is easy to install and reconfigure.
• It is very organized. Each node gets to send the data when it receives an empty token. This helps to reduces chances of collision. Also in ring topology all the traffic flows in only one  direction at very high speed.
• Even when the load on the network increases, its performance is better than bus topology.
• There is no need for network server to control the connectivity between workstations.
• Additional components do not affect the performance of network.
•  Each computer has equal access to resources.

Disadvantages

• The traffic is unidirectional.
• Any break in the ring can cause entire network failure.
• Network is highly dependent on the wire which connects different components.

 HYBRID TOPOLOGY

The combination of two or more topologies is called hybrid topology. In this example we use star, bus and ring topologies.

Advantages

• Reliable : Fault detection and troubleshooting is easy in this type of topology. 
• Scalable: Its easy to increase the size of network by adding new components, without disturbing existing architecture.
• Flexible: Hybrid Network can be designed according to the requirements of the organization and by optimizing the available resources. Special care can be given to nodes where traffic is high as well as where chances of fault are high.
• Effective: Hybrid topology is the combination of two or more topologies, so we can design it in such a way that strengths of constituent topologies are maximized while there weaknesses are neutralized. 

Disadvantages

• Complexity of Design: One of the biggest drawback of hybrid topology is its design. Its not easy to design this type of architecture and its a tough job for designers. Configuration and installation process needs to be very efficient.
• Costly Hub: The hubs used to connect two distinct networks, are very expensive. These hubs are different from usual hubs as they need to be intelligent enough to work with different architectures and should be function even if a part of network is down.
• Costly Infrastructure: As hybrid architectures are usually larger in scale, they require a lot of cables, cooling systems, sophisticate network devices, etc.

 WIRELESS TOPOLOGY
A wireless topology is the one in which few cables are used to connect to the systems. The network is made up of transmitters that broadcasts the packets using radio frequencies. The networks contains special transmitters called cells or wireless access points. The Wireless networks therefore have only two topologies: infrastructure and adhoc. This is a direct and natural result of the non-physical nature of interaction of computers in a wireless network.

Advantages

• It reduces the cost of cabling.
• Troubleshooting failed devices and cells are easy.

Disadvantages

• It includes higher chances of signal interferences.
• Another main drawbacks is signal interception