單項選擇題

An administrator needs to change a system’s run level from level 2 to level 3. What is the appropriate method to accomplish this（）

A.Use the reboot command.
B.Edit the /etc/reboot file and reboot the system.
C.Edit /etc/.init.state file and reboot the system.
D.Use the telinit command

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單項選擇題

An administrator needs to be able to list the number and size of backup sets on a tape. Which of the following procedures accomplish this（）

A.Use the tcopy /dev/rmtO.l until an end-of-tape error notification is received.
B.Use the cpio -idmv < /dev/rmtO.l until an end-of-tape error notification is received.
C.Use the tar -tvf /dev/rmtO.l repeatedly until an end-of-tape error notification is received.
D.Use the dd if=/dev/rmt0.1 bs=128k count=EOT until an end-of-tape error notification is received.

單項選擇題

A user wants to be permanently added to the dba group. Which of the following commands or processes can be used to accomplish this（）

A.chgrp
B.chuser
C.edit /etc/user
D.edit /etc/security/group