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By comptia
Aug, 2025

Verified

25Q per page

Question 1

SIMULATION -
Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel? (Specify the file name only without any path.)

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Question 2

During a system boot cycle, what program is executed after the BIOS completes its tasks?

  • A: The bootloader
  • B: The inetd program
  • C: The init program
  • D: The kernel
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Question 3

Which run levels should never be declared as the default run level when using SysV init? (Choose TWO correct answers.)

  • A: 0
  • B: 1
  • C: 3
  • D: 5
  • E: 6
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Question 4

Which of the following statements is correct when talking about /proc/?

  • A: All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot.
  • B: All files within /proc/ are read-only and their contents cannot be changed.
  • C: All changes to files in /proc/ are immediately recognized by the kernel.
  • D: All files within /proc/ are only readable by the root user.
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Question 5

What of the following statements are true regarding /dev/ when using udev? (Choose TWO correct answers.)

  • A: Entries for all possible devices get created on boot even if those devices are not connected.
  • B: Additional rules for udev can be created by adding them to /etc/udev/rules.d/.
  • C: When using udev, it is not possible to create block or character devices in /dev/ using mknod.
  • D: The /dev/ directory is a filesystem of type tmpfs and is mounted by udev during system startup.
  • E: The content of /dev/ is stored in /etc/udev/dev and is restored during system startup.
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Question 6

Which of the following information is stored within the BIOS? (Choose TWO correct answers.)

  • A: Boot device order
  • B: Linux kernel version
  • C: Timezone
  • D: Hardware configuration
  • E: The system's hostname
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Question 7

Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)

  • A: shutdown -r now
  • B: shutdown -r "rebooting"
  • C: telinit 6
  • D: telinit 0
  • E: shutdown -k now "rebooting"
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Question 8

Which of the following are init systems used within Linux systems? (Choose THREE correct answers.)

  • A: startd
  • B: systemd
  • C: Upstart
  • D: SysInit
  • E: SysV init
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Question 9

What information can the lspci command display about the system hardware? (Choose THREE correct answers.)

  • A: Device IRQ settings
  • B: PCI bus speed
  • C: System battery type
  • D: Device vendor identification
  • E: Ethernet MAC address
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Question 10

Which of the following commands brings a system running SysV init into a state in which it is safe to perform maintenance tasks? (Choose TWO correct answers.)

  • A: shutdown -R 1 now
  • B: shutdown -single now
  • C: init 1
  • D: telinit 1
  • E: runlevel 1
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Question 11

What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?

  • A: /lib/init.so
  • B: /sbin/init
  • C: /etc/rc.d/rcinit
  • D: /proc/sys/kernel/init
  • E: /boot/init
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Question 12

SIMULATION -
Which command will display messages from the kernel that were output during the normal boot sequence?

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Question 13

Which of the following commands will write a message to the terminals of all logged in users?

  • A: bcast
  • B: mesg
  • C: print
  • D: wall
  • E: yell
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Question 14

Which of the following kernel parameters instructs the kernel to suppress most boot messages?

  • A: silent
  • B: verbose=0
  • C: nomesg
  • D: quiet
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Question 15

Which of the following options for the kernel's command line changes the systemd boot target to rescue.target instead of the default target?

  • A: systemd.target=rescue.target
  • B: systemd.runlevel=rescue.target
  • C: systemd.service=rescue.target
  • D: systemd.default=rescue.target
  • E: systemd.unit=rescue.target
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Question 16

Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?

  • A: /etc/keys
  • B: /proc/keys
  • C: /etc/inittab
  • D: /proc/inittab
  • E: /etc/reboot
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Question 17

SIMULATION -
Which Debian package management tool asks the configuration questions for a specific already installed package just as if the package were being installed for the first time? (Specify ONLY the command without any path or parameters.)

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Question 18

Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

  • A: dd if=/dev/zero of=/dev/sda bs=512
  • B: dd if=/dev/zero of=/dev/sda bs=512 count=1
  • C: dd if=/dev/zero of=/dev/sda bs=440 count=1
  • D: dd if=/dev/zero of=/dev/sda bs=440
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Question 19

Which of the following commands lists the dependencies of a given dpkg package?

  • A: apt-cache depends-on package
  • B: apt-cache dependencies package
  • C: apt-cache depends package
  • D: apt-cache requires package
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