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Which data transmission technology does Ethernet use?
CSCM/CA
CDMA/CS
CASD/CD
CSMA/CD
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.[1]
CSMA/CD is a modification of pure carrier sense multiple access (CSMA). CSMA/CD is used to improve CSMA performance by terminating transmission as soon as a collision is detected, thus shortening the time required before a retry can be attempted.
Note: CSMA/CD for Ethernet is very outdated and no longer used in the enterprise, but is implemented for backwards compatibility with half-duplex connections and older networking systems like FastEthernet.
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