题目内容
(请给出正确答案)
[单选题]
On ZXCTN6100 equipment main board, FE ports ()does not support terminal loopback.
A.1—2
B.3-4
C.1-4
D.5-6
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A.1—2
B.3-4
C.1-4
D.5-6
The purposes for several users to share a mainframe are ______.
A.to divide the cost of the equipment among them
B.to utilize the equipment to the maximum extent
C.to produce fewer PCs
D.both A and B
()and() for commissioning on site.