Ethernet Features

 What is Ethernet?

 

 * Simply Ethernet is a local area networking Technology.

 * It is a example of multiple acess network.

 * It is one of working example of the CSMA/CD(carrier sense,multiple acess with collision detect)   

    local area network.

 * "Multiple acess" means that through a shared link set of nodes receive and send frames.

 * "Carrier sense" means that all nodes can distinguish b/w an idle &busy links.

 * 802.3 is the IEEE standard for Ethernet.

  Physical property of Ethernet:

  * It is working on a coaxial cable of up to 500 m range.

   

 

 * Frame format

 *  64 bit  preamble allows the receiver to synchronize with signal. 

 * A transceiver directly attached here to detects when the line is idle.It also receive incoming signals.

 * A repeaters are used to connect the multiple ethernet segments.

 

 

 * 10Base2 reprent a Ethernet Format. Means

     * 10 in 10Base2 which means that network operates at 10 Mbps.

     *  Base refers to baseband system.

     * 2 means that segment not longer than 200m.

     * Today new technology used 10baseT, where T means Twisted pair.

 * For a star configuration multiple segments connected buy hubs.

 

 

  Transmitter algoritham are used in Ethernet

   * Adapter has no frame to send &line is idle It transmit frame.

   * Adapter has frame to send &line is busy.wait for idle state then send. 

 Advantages:  

  * It is easy to add new host to Network.

  *It is inexpensive: cable is cheap.

 

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