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 sy
题目
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