Linux System Installation & Configuration Flashcards

Which file in /etc contains the default runlevel for a System V init-based Linux system?

Answer: /etc/inittab

The /etc/inittab file defines the default runlevel and controls the init process behavior on System V init systems.

During a Kickstart-based RHEL installation, which directive specifies the disk partitioning scheme?

Answer: part

The 'part' (or 'partition') directive in a Kickstart file defines disk partitions, but 'part' is the standard short form used.

What is the purpose of the /etc/fstab 'dump' field (5th column)?

Answer: Enables filesystem backup via dump utility

The 5th field in /etc/fstab is used by the dump utility to determine if the filesystem should be backed up (1=yes, 0=no).

Which bootloader configuration file must be updated after adding a new kernel in a GRUB 2 system?

Answer: /boot/grub2/grub.cfg

On GRUB 2 systems, /boot/grub2/grub.cfg is the active config file, but it should be regenerated with grub2-mkconfig rather than edited directly.

Which command verifies the integrity of an RPM package against its installed file list?

Answer: rpm -V packagename

The 'rpm -V' (verify) command checks installed package files against the RPM database for size, checksum, permissions, and other attributes.

A system fails to boot after editing /etc/fstab. Which rescue mode command removes a bad entry without a GUI?

Answer: vi /etc/fstab after mounting root read-write

In rescue mode, remounting the root filesystem read-write with 'mount -o remount,rw /' then editing /etc/fstab with vi corrects bad entries.

Which systemd target is the closest equivalent to SysV runlevel 3?

Answer: multi-user.target

multi-user.target corresponds to SysV runlevel 3: full multi-user, network enabled, but no graphical display manager.