4.3

Question 1

A computer program that runs as a background process. It may run in response to an event or it may be set up to run at a specific time.

Answer 1

daemon

Question 2

An object such as a socket, filesystem, or device

Answer 2

resource

Question 3

A unit configuration file that contains information about a grouping of units that is used as a synchronization point during system startup.

Answer 3

target unit

Question 4

A unit file consist of sections that specify behavior and metadata for directing actions of or upon processes, daemons, resources, and objects in a Linux system.

Answer 4

unit file

Question 5

Halts the system.

Answer 5

poweroff.target

Question 6

Configures the system to run in single-user mode with a text-based user interface. This target sets up a base system and opens a rescue shell for troubleshooting system problems.

Answer 6

rescue.target

Question 7

Configures the system to run in multi-user mode with a text-based user interface. This target is commonly used as the default mode for server systems.

Answer 7

multi-user.target

Question 8

Configures the system to run in multi-user mode with a graphical user interface. This target provides all the services of the multi-user target with the addition of a graphical user interface. This target is commonly used as the default mode for desktop systems.

Answer 8

graphical.target

Question 9

Reboots the system.

Answer 9

reboot.target

Question 10

Opens a minimal emergency shell for troubleshooting serious system problems.

Answer 10

emergency.target

Question 11

Equivalent of poweroff.target

Answer 11

runlevel0.target

Question 12

Equivalent of rescue.target

Answer 12

runlevel1.target

Question 13

Equivalent of multi-user.target

Answer 13

runlevel2.target
runlevel3.target
runlevel4.target

Question 14

Equivalent of graphical.target

Answer 14

runlevel5.target

Question 15

Equivalent of reboot.target

Answer 15

runlevel6.target