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【单选题】
某单位已经组建了多个Ethernet工作组网络，如果计划将这些工作组网络通过主干网互联，那么下面(10)是主干网优选的网络技术。A.
帧中继
B.
ATM
C.
FDDI
D.
千兆以太网
拍照语音搜题，微信中搜索"皮皮学"使用
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