Linux Foundation-Certified System Administrator Set 1

/etc/keys ✘ /proc/keys ✘ /etc/inittab ✘ /proc/inittab ✔ /etc/reboot ✔

The bootloader ✘ The inetd program ✘ The init program ✘ The kernel ✔

All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot. ✘ All files within /proc/ are read-only and their contents cannot be changed. ✘ All changes to files in /proc/ are immediately recognized by the kernel. ✘ All files within /proc/ are only readable by the root user. ✔

/lib/init.so ✘ /sbin/init ✘ /etc/rc.d/rcinit ✘ /proc/sys/kernel/init ✔ /boot/init ✔

bcast ✘ mesg ✘ print ✘ wall ✔ yell ✔

silent ✘ verbose=0 ✘ nomesg ✘ quiet ✔

systemd.target=rescue.target ✘ systemd.runlevel=rescue.target ✘ systemd.service=rescue.target ✘ systemd.default=rescue.target ✔ systemd.unit=rescue.target ✔

kill -HUP $(pidof grub) ✘ grub-install ✘ grub ✘ No action is required ✔

apt-get update ✘ apt-get upgrade ✘ apt-cache update ✘ apt-get refresh ✔ apt-cache upgrade ✔

apt-cache depends-on package ✘ apt-cache dependencies package ✘ apt-cache depends package ✘ apt-cache requires package ✔