题目内容
（请给出正确答案）
[主观题]
As a network administrator, you will need to decide on the appropriate network devices to
use. Which of the following correctly describes the roles of devices in a WAN？ (Choose three)
A. A CSU/DSU terminates a digital local loop.
B. A router is commonly considered a DCE device.
C. A modem terminates an analog local loop.
D. A router is commonly considered a DTE device.
E. A modem terminates a digital local loop.
F. A CSU/DSU terminates an analog local loop.
G. A modem is used to terminate a T1
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