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单选题
A system administrator has created tty2 on a serial port connection to a system.  When attempting to verify the connection the following error is observed:   # cu -ml tty2   cu: 0835-028 The connection failed. NO DEVICES AVAILABLE. Which of the following should be performed to correct this error?()
A

Create an entry for tty2 in the /etc/uucp/Devices file

B

Re-enter the command as cu -dml tty2

C

Create an entry for tty2 in the /etc/uucp/Systems file

D

Re-enter the command as cu -s 9600 -dh -t -l tty2


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