Definition of topology

Network topology किसी भी नेटवर्क की संरचना, उपस्थिति या लेआउट को दर्शाता है कि कंप्यूटर संचार नेटवर्क के भीतर कंप्यूटर केबल, नोड और अन्य घटक कैसे तार्किक और शारीरिक रूप से जुड़े हुए हैं।
शारीरिक रूप से टोपोलॉजी एक नेटवर्क को शारीरिक रूप से निर्धारित करने के तरीके को दर्शाता है, और तार्किक टोपोलॉजी का वर्णन है कि डेटा वास्तव में नेटवर्क के माध्यम से कैसे प्रवाहित होता है।

Bus topology

A bus topology is a multi point data communication circuit that makes it relatively simple to control data flow between and among the computers because this configuration allows all stations to receive every transmission over the network.
बस टोपोलॉजी का उपयोग ज्यादातर तब किया जाता है जब नेटवर्क इंस्टॉलेशन छोटा, आसान, सरल और अस्थायी होता है।

Features of the bus topology

  1. This is multi point configuration.
  2. Adequate signal to noise ratio should be maintained.
  3. The signal should not be too strong.This is necessary to avoid possibility of signal distortion.
  4. The is called as signal balancing which is not an easy task at all.

Advantages of Bus topology

Disadvantage of bus topology

Ring topology

Ring Topology में, प्रत्येक कंप्यूटर अगले कंप्यूटर से जुड़ा होता है, पहला कंप्यूटर से जुड़ा होता है।
They are used in high-performance networks where large bandwidth is essential,e.g,time attractive features such as video and audio.
A ring topology is a multi point data communication network where all stations are interconnected in random series to form a closed loop or circle.
The message flow around the ring in one direction.there is no termination point because there is no end point to the ring.Some ring topology networks do token passing.
A short message called a token,is passed around the ring until a computer wishes to send information to another computer.

Features of ring topology

Advantages of ring topology

Disadvantage of ring topology

Star topology

In the star topology all computers are connected to a central device called a hub. In star topology, each computer communicates with a central hub that sends instructions to all computers.

Hub – The hub in a broadcast star network can be active or passive.

Active hub

An active hub generates electrical signals and sends these signals to a self-connected computer. It is also called multi-port repeater. The active hub requires an external power supply.

Passive hub –

A passive hub is a wiring panel or punch down block which acts as a connection point.It does not amplify or regenerate the signal.Passive hubs do not require electrical power supply.

Advantage of star topology

Disadvantages of a star topology

Mesh topology

In the mesh topology,every device has a dedicated point-to-point link to every other devices devices.
The term of dedication means that the link carries traffic only between two devices it connects.
A fully connected mesh network therefore has n(n-1)/2 physical channels to link devices.

Advantage of mesh topology

Disadvantage of mesh topology

Tree topology

Tree topology एक विशेष प्रकार की कंप्यूटर संरचना है जिसमें कई कंप्यूटरों को पेड़ की शाखाओं के व्यवस्थित रूप में परस्पर जोड़ा जाता है।

Advantage of tree topology

Disadvantage of topology

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