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What is Hub ?

what is a Hub ?

  • Hub is a networking device which is used to connect multiple devices together in LAN(local area network).
  • Hub works under physical layer of OSI(open system interconnection) model.
  • It is purely hardware device where data reaches from one or, more nodes and is forwarded to one or, more nodes.
  • Traffic is high in hub because it is purely hardware .It has not software to determine the destination address.so,it does only forwarding but not filtering.Lets take an example for better understand:-            
  • If pc1 sends data to pc2,Data will goes to pc2 and also data goes to pc3 and pc4.which means hub can not do filtering .It can do only forwarding.                                                                                                                                                           
  • Collision is high in hub.
  • Hub communicates on the basis of half-duplex mode,Which means at a time a computer can either transmit or, receive but  can not do both simultaneously.
  • Hub has singe collision domain.  
  • Hub is also a multiport repeater.                                                                                                                                      
  • Hub is two types .These are active  hub and passive hub.
  • Active hub needs electricity and can regenerate signal.
  • Passive does not need electricity and can not regenerate signal.It simply receive and forward.

Comments

  1. ABtalkApril 20, 2020 at 9:14 AM

    Hii guys if you found to be helpful,plz share it with your friends.

    ReplyDelete

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