单项选择题
Which command prompts an ERX Edge Router to go into a loopback mode on T1 number 1 when a command is received from a remote ERX Edge Router?（）
A.A
B.B
C.C
D.D
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单项选择题
Which control expression must be the last line in all macros?（）
A.A
B.B
C.C
D.D -
单项选择题
Which command is used to execute a macro called setup.mac ?（）
A.A
B.B
C.C
D.D -
单项选择题
Which configuration command removes all log filters currently configured on the ERX Edge Router?（）
A.A
B.B
C.C
D.D
