单选题An administrator needs to change a system’s run level from level 2 to level 3. What is the appropriate method to accomplish this（）AUse the reboot command.BEdit the /etc/reboot file and reboot the system.CEdit /etc/.init.state file and reboot the system.DUse the telinit command
单选题
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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