101.2 Boot the System LPIC-1 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is the role of an initramfs (initial RAM filesystem) in the boot process?

   • ATo store the kernel's configuration parameters
   • BTo replace the root filesystem after boot
   • CTo provide a temporary root filesystem with essential drivers and tools to mount the real root filesystem
   • DTo provide a graphical boot menu
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2. 17expert · hard

   A server with a software RAID array fails to boot. The administrator suspects the kernel is not finding the root filesystem because the RAID driver is not loaded. The administrator has verified that the initramfs does not contain the RAID driver. Which action should the administrator take to resolve this?

   • ABoot from a rescue CD and run 'grub-install' to reinstall the boot loader.
   • BAdd the 'rd.auto' kernel parameter to the GRUB configuration to automatically detect the RAID array.
   • CUse the 'root=/dev/md0' kernel parameter to specify the RAID device directly.
   • DRebuild the initramfs with the RAID driver included using the appropriate command (e.g., mkinitrd or update-initramfs).
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4. 18application · medium

   A Linux administrator needs to ensure that a custom service starts after the network is available and before a database service that depends on it. The system uses systemd. Which approach should the administrator take?

   • ACreate a unit file with After=network-online.target and Before=db.service in the [Unit] section.
   • BUse the chkconfig command to set the service start order to 85 and the database to 90.
   • CSet the service's runlevel to 3 in /etc/inittab and place it before the database entry.
   • DAdd the service to the rc.local script after the network startup lines and before the database startup lines.
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5. 19application · medium

   A system administrator needs to boot a systemd-based Linux server into a state where only the essential services are running and the network is disabled, for maintenance. Which systemd target should the administrator specify at the boot prompt?

   • Aemergency.target
   • Bmulti-user.target
   • Cgraphical.target
   • Drescue.target
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6. 20foundation · easy

   Which of the following is a common method to recover a Linux system that will not boot normally?

   • ABoot from a live CD or rescue media and mount the root filesystem to repair it
   • BUse the `systemctl` command from the BIOS setup
   • CReinstall the entire operating system without preserving data
   • DRun the `fsck` command from the GRUB menu
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