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
正确答案:B
答案解析:有
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