You are employed as a senior network technician at ABC.com.

You are hosting a training exercise for new trainees. You are discussing what the purpose of
CSMA/CD is in Ethernet standard networks.
Which of the following best describes this purpose?

A.
CSMA/CD forces computers to listen to the Ethernet before sending in order to make sure that
no other host on the wire is sending.

B.
CSMA/CD divides the Ethernet equally among all transmitting nodes within a collision domain.

C.
CSMA/CD uses a token to allow a device permission to transmit over the Ethernet.

D.
CSMA/CD allows computers to send data over the Ethernet whenever they want.