4.2.1

Question 1

The following commands can be used to view the version of GRUB used by the Linux distribution you have installed. The actual command used will vary between distributions

Answer 1

grub-install -V or grub-install –version
grub2-install -V or grub2-install –version

Question 2

The configuration files for GRUB2 are

Answer 2

/boot/grub/grub.cfg or /boot/grub2/grub.cfg

Question 3

Depending on the distribution, the update-grub or grub2-mkconfig commands generate the

Answer 3

configuration files

Question 4

Some distributions, such as Fedora and Centos, create an /etc/grub2/grub.cfg file. This file is a symbolic link to the

Answer 4

/boot/grub2/grub.cfg file

Question 5

The /etc/grub.d/ directory holds script files that are read when the ______________ or the ____________commands are used

Answer 5

update-grub or the grub2-mkconfig

Question 6

Sets initial appearance items, such as the graphics mode, default selection, timeout, etc. These settings are typically imported from the /etc/default/grub file.

Answer 6

00_header

Question 7

Identifies all Linux kernels installed on the root device and creates corresponding GRUB2 menu entries for each one. This allows you to select which Linux kernel you want to load when you initially boot the system

Answer 7

10_linux

Question 8

Executes os-prober to search for other operating systems (such as Microsoft Windows) and automatically creates GRUB2 menu items for them.

Answer 8

30_os-prober

Question 9

Allows for custom menu entries, which are imported directly into /boot/grub/grub.cfg without any changes.

Answer 9

40_custom

Question 10

Sets the default menu entry

Answer 10

GRUB_DEFAULT

Question 11

Sets the last selected OS from the menu as the default OS on the next boot

Answer 11

GRUB_SAVEDEFAULT

Question 12

Determines how long a blank screen will be displayed.

Answer 12

GRUB_HIDDEN_TIMEOUT

Question 13

Works in conjunction with the GRUB_HIDDEN_TIMEOUT parameter.

Answer 13

GRUB_HIDDEN_TIMEOUT_QUIET

Question 14

Determines how long to wait for user interaction before booting the default operating system

Answer 14

GRUB_TIMEOUT

Question 15

Passes options to the kernel. With the GRUB Legacy bootloader, this was done by adding options to the end of the kernel line

Answer 15

GRUB_CMDLINE_LINUX

Question 16

Sets the background image during the GRUB2 menu display.

Answer 16

GRUB_BACKGROUND

Question 17

Sets the resolution of the graphical GRUB2 menu.

Answer 17

GRUB_GFXMODE

Question 18

Enables and disables the os-prober check of other partitions for operating systems, including Windows and Linux, during execution of the update-grub command.

Answer 18

GRUB_DISABLE_OS_PROBER

Question 19

These passwords prevent a person from accessing the bootloader menu without knowing the password. can be implemented on one or all of the available boot menu options.

Answer 19

bootloader password

Question 20

These passwords allow you set low-level passwords to restrict people from booting the computer, booting from removable devices, and changing BIOS or UEFI settings without knowing the password.

Answer 20

UEFI/BIOS