What are two characteristics of the CSMA/CD access method? (Choose two.)

August 27, 2021 by Admin

What are two characteristics of the CSMA/CD access method? (Choose two.)

  • It checks to see if a collision has been detected.
  • It does a round robin search for requests to transmit from all nodes on the network.
  • It signals its intent to transmit on the network.
  • It waits until the transmission medium is idle.

Explanation:

– Main procedure for the CSMA/CD:
– Is my frame ready for transmission? If yes, it goes on to the next point.
– Is medium idle? If not, wait until it becomes ready
– Start transmitting.
– Did a collision occur? If so, go to collision detected procedure.
– Reset retransmission counters and end frame transmission.

Note:
Carrier Sense Multiple Access With Collision Detection (CSMA/CD) is a media access control method used most notably in local area networking using early Ethernet technology. It uses a carrier sensing scheme in which a transmitting data station detects other signals while transmitting a frame, and stops transmitting that frame, transmits a jam signal, and then waits for a random time interval before trying to resend the frame.

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