A system administrator who has forgotten his root password on a server can do which of the following to change the root password?
A. Use a brute-force password sniffer.
B. Edit the /etc/inittab file to load without NIS.
C. Use the passwd command from the administrator group.
D. Reboot the system in runlevel 1 and use "init=/bin/sh" as a boot option.
Answer: D
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