单选题What is the function of the CSMA/CD algorithm in Ethernet technologies?（）Adefines how the media is accessedBsupplies a token to determine which host has access to the mediaCdefines the encoding of electrical signals on the wireDdetermines the preamble bits
单选题
What is the function of the CSMA/CD algorithm in Ethernet technologies?（）
A
defines how the media is accessed
B
supplies a token to determine which host has access to the media
C
defines the encoding of electrical signals on the wire
D
determines the preamble bits
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