The cable used in the Ethernet  1000BASE-LX  standard is  _______ The  maximum transmission distance is  ________  .

The cable used in the Ethernet  1000BASE-LX  standard is  _______ The  maximum transmission distance is  ________  .
A . 2  pairs of Category  5 UTP  twisted pair,  100m
B . multi- mode fiber,  550m
C . 4  pairs of Category  3 UTP  twisted pair,  100m
D . single -mode optical fiber,  5000m
E . 4  pairs of Category  5 UTP  twisted pair,  100m
F . 2  pairs of  STP  twisted pair,  25m

Answer:   D

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