1 | P a g e | © copyright 2024/2025 | Grade A+
RHCSA Questions and Answers
(100% Pass)
commands/process to reset root password
✓ on boot:
select most recent kernel
`e` to edit
goto line with linux16, add `rd.break` to end of line
`ctrl+x` to continue boot to rd rescue mode
remount /sysroot as readable (defaults to read only in rd rescue mode):
`mount -o remount,rw /sysroot`
load the target env with:
`chroot /sysroot`
reset the password with:
`passwd root`
fix selinux context with (instructs selinux to perform full relabel on next
reboot):
`touch /.autorelabel`
fix bootloader config issues
Master01 | October, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
(kernel not found or similar error)
✓ edit boot config
confirm boot config is correct and make changes (spelling errors, etc)
add `systemd.unit=rescue.target` to the end of the linux16 line
regenerate grub config with the following command:
`grub2-mkconfig -o /boot/grub2/grub.cfg`
To diagnose boot issues more easily, you decide to disable 'quiet boot' and
'graphical boot' by removing 'quiet' and 'rhgb' from the kernel boot
parameters. How would you accomplish this so it's persistent?
✓ Edit the 'GRUB_CMDLINE_LINUX' line in '/etc/default/grub' then
regenerate the bootloader config using 'grub2-mkconfig -o
/boot/grub2/grub.cfg'.
Under normal circumstances, what is systemd's PID (Process ID)?
✓ PID 1 - because it's the very first binary called by the kernel at boot,
and is responsible for starting up all other processes.
Which rescue parameter would you pass to the kernel from the grub2 menu if
your system was failing to boot because a filesystem check was failing?
Master01 | October, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
✓ systemd.unit=emergency.target
Booting to the emergency target state drops to a rescue shell after the 'root'
filesystem has been mounted readonly, but BEFORE other FS checks are
carried out. Although you could do the same with 'rd.break' it would require
considerably more effort.
You are a member of a team of admins who are responsible for a critical
system. This system has two different web servers installed: The first (Nginx) is
used to serve content, the other (httpd) is installed only to satisfy
dependencies and should never be started as it causes a conflict. What
command could you run to ensure that 'httpd' is never accidentally started or
enabled by another admin?
✓ systemctl mask httpd
You're having a bad day and accidentally delete the 'initramfs' file in /boot
that matches your current kernel. Which command would you run to recover
from this?
✓ dracut
Master01 | October, 2024/2025 | Latest update
RHCSA Questions and Answers
(100% Pass)
commands/process to reset root password
✓ on boot:
select most recent kernel
`e` to edit
goto line with linux16, add `rd.break` to end of line
`ctrl+x` to continue boot to rd rescue mode
remount /sysroot as readable (defaults to read only in rd rescue mode):
`mount -o remount,rw /sysroot`
load the target env with:
`chroot /sysroot`
reset the password with:
`passwd root`
fix selinux context with (instructs selinux to perform full relabel on next
reboot):
`touch /.autorelabel`
fix bootloader config issues
Master01 | October, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
(kernel not found or similar error)
✓ edit boot config
confirm boot config is correct and make changes (spelling errors, etc)
add `systemd.unit=rescue.target` to the end of the linux16 line
regenerate grub config with the following command:
`grub2-mkconfig -o /boot/grub2/grub.cfg`
To diagnose boot issues more easily, you decide to disable 'quiet boot' and
'graphical boot' by removing 'quiet' and 'rhgb' from the kernel boot
parameters. How would you accomplish this so it's persistent?
✓ Edit the 'GRUB_CMDLINE_LINUX' line in '/etc/default/grub' then
regenerate the bootloader config using 'grub2-mkconfig -o
/boot/grub2/grub.cfg'.
Under normal circumstances, what is systemd's PID (Process ID)?
✓ PID 1 - because it's the very first binary called by the kernel at boot,
and is responsible for starting up all other processes.
Which rescue parameter would you pass to the kernel from the grub2 menu if
your system was failing to boot because a filesystem check was failing?
Master01 | October, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
✓ systemd.unit=emergency.target
Booting to the emergency target state drops to a rescue shell after the 'root'
filesystem has been mounted readonly, but BEFORE other FS checks are
carried out. Although you could do the same with 'rd.break' it would require
considerably more effort.
You are a member of a team of admins who are responsible for a critical
system. This system has two different web servers installed: The first (Nginx) is
used to serve content, the other (httpd) is installed only to satisfy
dependencies and should never be started as it causes a conflict. What
command could you run to ensure that 'httpd' is never accidentally started or
enabled by another admin?
✓ systemctl mask httpd
You're having a bad day and accidentally delete the 'initramfs' file in /boot
that matches your current kernel. Which command would you run to recover
from this?
✓ dracut
Master01 | October, 2024/2025 | Latest update
