单选题After testing a new 100BaseTX cable, the technician determines that only pairs 4, 5, 7, and 8 are straight-thru wires. Which of the following MOST likely describes this cable type?（）ACrossover cable with open pairsBCrossover cableCRollover cableDStraight-thru cable with open pairs
单选题
After testing a new 100BaseTX cable, the technician determines that only pairs 4, 5, 7, and 8 are straight-thru wires. Which of the following MOST likely describes this cable type?（）
A
Crossover cable with open pairs
B
Crossover cable
C
Rollover cable
D
Straight-thru cable with open pairs
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