单选题Which of the following LAN technologies is considered fast Ethernet and uses two pairs of cabling,one pair for sending and the other pair for receiving?（）A100Base-T4B100Base-TXC100Base-XD100Base-FX
单选题
Which of the following LAN technologies is considered fast Ethernet and uses two pairs of cabling,one pair for sending and the other pair for receiving?（）
A
100Base-T4
B
100Base-TX
C
100Base-X
D
100Base-FX
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