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What are two characteristics of the CSMA/CD access method? (Choose two.)
A. It checks to see if a collision has been detected.
B. It does a round robin search for requests to transmit from all nodes on the network.
C. It signals its intent to transmit on the network.
D. It waits until the transmission medium is idle.
Correct Answer: AD
Explanation/Reference:
Main procedure for the CSMA/CD:
1. Is my frame ready for transmission? If yes, it goes on to the next point.
2. Is medium idle? If not, wait until it becomes ready
3. Start transmitting.
4. Did a collision occur? If so, go to collision detected procedure.
5. 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.
Every site says it’s A and D. Please name your sources, because I can’t find any mention of CSMA/CD doing a round robin search for requests to transmit from all nodes on the network.
What are two characteristics of the CSMA/CD access method? (Choose two)
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 12bc. #