Chapter 8 Review Questions

Under what directory is Stage 2 of the GRUB2 boot loader stored?

/boot

What is the name of the directory that contains symbolic links to UNIX SysV rc scripts for runlevel 2?

/etc/rc2.d

Which runlevel starts a display manager, such as GDM?

5

Which assistive technology will make a desktop environment more accessible to a person with low vision?

High Contrast;High Contrast is an assistive technology designed for people with vision-impairment.

Which two implementations of X Windows are commonly used in Linux? (Choose two answers.)

a. X.org b. XFCE c. winX d. Wayland X.org and Wayland; X.org is the traditional X Windows system used on Linux systems, while Wayland is a recent replacement for X.org.

Which of the following commands can be used to start a UNIX SysV daemon called lala in runlevels 1, 2, and 3?

chkconfig --level 123 lala on

You have recently modified the system time using the date command. What command can you run to ensure that the same time is updated within the system BIOS?

hwclock -w

Which command instructs the UNIX SysV init or Systemd daemon to reboot the system?

init 6; Runlevel 6 instructs SysV init to reboot the system. Since Systemd is backwards-compatible to SysV init, entering runlevel 6 will instruct Systemd to enter reboot.target.

Which command can be used to start X Windows, the window manager, and the default desktop environment?

startx

Which of the following Systemd commands can be used to stop a daemon called lala?

systemctl stop lala.service

Which of the following Systemd units is functionally equivalent to a runlevel?

target

What variable is often set at the beginning of a shell script to set a specific locale? a. LC b. LANG c. LOCALE d. CMDLINE

LANG

You want to configure the runlevels that a particular upstart daemon is started in. What should you do?

Modify the daemon configuration file within the /etc/init directory.

Which of the following statements is true? a. Unicode provides the least localization support for different languages. b. ASCII is the most common character set used today. c. UTF-8 is commonly used to provide Unicode character set support. d. ASCII is an extension of the ISO-8859 standard

UTF-8 is commonly used to provide Unicode character set support.

What desktop environment is most likely to be installed on a Linux server system?

XFCE

You have created a Systemd mount unit file that mounts a filesystem upon entering the multi-user target. However, when you switch to the multi-user target, you notice that the filesystem is not mounted. Which of the following troubleshooting steps should you take? (Choose all that apply.) a. Verify that the filesystem was specified using a UUID in the mount unit file. b. Remove any entries for the filesystem from /etc/fstab. c. Ensure that the mount unit is activated using the systemctl enable command. d. Run the update-rc.d command to reindex all unit files.

a. Verify that the filesystem was specified using a UUID in the mount unit file. c. Ensure that the mount unit is activated using the systemctl enable command.

Which of the following indicates the second MBR partition on the third hard disk drive to GRUB2?

hd2,msdos2; MBR partitions are labelled using msdos followed by the partition number within GRUB2, while hard disk drives are labelled using hd followed by the hard disk drive number (starting from 0).

Which command can be used to modify the default locale on the system?

localectl

What kernel option can be specified within a boot loader to force the system to boot to Single User Mode?

single

Which of the following statements is true? a. GRUB Legacy can be loaded from a MBR or GPT. b. After modifying /etc/default/grub, you must run the grub2-mkconfig command before the changes are made to GRUB2. c. GRUB2 can only be loaded from a UEFI System Partition. d. GRUB needs to be reinstalled after it has been modified.

After modifying /etc/default/grub, you must run the grub2-mkconfig command before the changes are made to GRUB2.