Monday, 14 September 2015


1- CSMA/CD :

CSMA/CD stands for Carrier Sense Multiple Access Collision Detection, we can identifier this concept very easily with the following :
on a LAN (local area network) with a half Duplex mode collision may occur, so with CSMA/CD access methode, if there is any a collision on the link the switch will inform the other network devices to stop forwarding data on that wire until the link is free to receive incoming data.
the CSMA/CD uses an algorithm to manage data flow :
























 as the flowchart above illustrate where the collision is detected a jam signal is sent and it took place according to backoff strategy, then we resend data when the transmision support is free and so on until there will be no collision, data will be sent until the end of transmission.
so this is it Guys, hope i covered it up as clear as possible.
Next we will see the Broadcast & Collision Domains see you Next
please comment for any notes or questions...

0 comments:

Post a Comment