试题详情
- 多项选择题Which of the following describes the roles of devices in a WAN?（）
A、A CSU/DSU terminates a digital local loop.
B、A modem terminates a digital local loop.
C、A CSU/DSU terminates an analog local loop.
D、A modem terminates an analog local loop.
E、A router is commonly considered a DTE device.
F、A router is commonly considered a DCE device.
- A,D,E
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