单选题Which of the following would MOST likely be used to punch down LAN cables before connecting them to the main switch?（）AIDFB66 blockCMDFD110 block
单选题
Which of the following would MOST likely be used to punch down LAN cables before connecting them to the main switch?（）
A
IDF
B
66 block
C
MDF
D
110 block
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解析：
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