101.3

Question 1

What command can be used to switch to a different runlevel or boot target?
A) systemctl isolate
B) systemctl reload
C) shutdown -r
D) init 6

Answer 1

A) systemctl isolate

Question 2

Which command reboots the system?
A) init 6
B) systemctl poweroff
C) init 0
D) systemctl reboot

Answer 2

D) systemctl reboot

Question 3

Which command shuts down the system immediately?
A) init 0
B) shutdown -h now
C) halt
D) reboot

Answer 3

B) shutdown -h now

Question 4

Which command can be used to bring the system to single-user mode?
A) systemctl reboot
B) systemctl isolate rescue.target
C) shutdown -r
D) init 3

Answer 4

B) systemctl isolate rescue.target

Question 5

What is the default systemd target for multi-user mode with a graphical interface?
A) graphical.target
B) multi-user.target
C) default.target
D) rescue.target

Answer 5

A) graphical.target

Question 6

Which runlevel is equivalent to the systemd rescue target?
A) 1
B) 3
C) 5
D) 0

Answer 6

A) 1

Question 7

How can you set the default target in a systemd-based system?
A) systemctl set-default
B) systemctl isolate default.target
C) systemctl enable graphical.target
D) systemctl start default.target

Answer 7

A) systemctl set-default

Question 8

Which systemd target is similar to runlevel 3?
A) graphical.target
B) multi-user.target
C) rescue.target
D) shutdown.target

Answer 8

B) multi-user.target

Question 9

Which command should be used to shutdown the system in 5 minutes?
A) shutdown -r 5
B) systemctl reboot -5
C) shutdown +5
D) init 0

Answer 9

C) shutdown +5

Question 10

What is the default runlevel in a system that uses systemd?
A) 3
B) 5
C) There is no default runlevel in systemd, but a default target
D) 1

Answer 10

C) There is no default runlevel in systemd, but a default target

Question 11

Which runlevel represents a reboot in a SysV system?
A) 0
B) 1
C) 5
D) 6

Answer 11

D) 6

Question 12

Which command is used to halt the system without powering it off?
A) shutdown -P
B) systemctl halt
C) shutdown -r
D) systemctl reboot

Answer 12

B) systemctl halt

Question 13

How can you check the current systemd target?
A) systemctl get-target
B) systemctl status target
C) systemctl get-default
D) systemctl list-units

Answer 13

C) systemctl get-default

Question 14

Which command transitions the system to runlevel 5 in a SysV init system?
A) init 3
B) init 5
C) init 0
D) init 1

Answer 14

B) init 5

Question 15

Which runlevel is typically used for single-user mode in SysV init?
A) 0
B) 1
C) 5
D) 6

Answer 15

B) 1

Question 16

Which systemctl command allows you to change the system state to multi-user mode?
A) systemctl isolate multi-user.target
B) systemctl start multi-user.target
C) systemctl enable multi-user.target
D) systemctl isolate rescue.target

Answer 16

A) systemctl isolate multi-user.target

Question 17

What does the command ‘shutdown -r now’ do?
A) Shut down the system immediately
B) Reboot the system immediately
C) Halt the system immediately
D) Put the system in rescue mode

Answer 17

B) Reboot the system immediately

Question 18

Which target is equivalent to runlevel 5 in a systemd system?
A) rescue.target
B) graphical.target
C) multi-user.target
D) shutdown.target

Answer 18

B) graphical.target

Question 19

Which command can be used to boot the system into rescue mode?
A) init 6
B) systemctl rescue
C) shutdown -r now
D) systemctl start graphical.target

Answer 19

B) systemctl rescue

Question 20

Which runlevel is associated with shutting down the system in a SysV init system?
A) 0
B) 1
C) 5
D) 6

Answer 20

A) 0

Question 21

Which runlevel corresponds to a full multi-user mode with networking in a SysV init system?
A) 1
B) 3
C) 5
D) 0

Answer 21

B) 3

Question 22

How can you reboot the system in a systemd environment?
A) systemctl stop
B) systemctl halt
C) systemctl reboot
D) init 0

Answer 22

C) systemctl reboot

Question 23

What happens if you execute ‘init 0’ in a SysV init system?
A) The system goes into single-user mode
B) The system shuts down
C) The system reboots
D) The system powers off

Answer 23

B) The system shuts down

Question 24

Which command allows you to set the system’s default target in a systemd environment?
A) systemctl get-default
B) systemctl set-target
C) systemctl set-default
D) systemctl isolate default

Answer 24

C) systemctl set-default

Question 25

What is the purpose of the ‘shutdown -P’ command?
A) Shut down and power off the system
B) Reboot the system
C) Halt the system without powering off
D) Bring the system to single-user mode

Answer 25

A) Shut down and power off the system

Question 26

Which systemctl command allows you to switch to a graphical.target?
A) systemctl isolate graphical.target
B) systemctl stop graphical.target
C) systemctl start graphical.target
D) systemctl enable graphical.target

Answer 26

A) systemctl isolate graphical.target

Question 27

What is the difference between ‘shutdown -h now’ and ‘systemctl poweroff’?
A) ‘shutdown -h now’ halts the system but does not power it off, ‘systemctl poweroff’ powers off the system
B) ‘shutdown -h now’ powers off the system immediately
C) There is no difference
D) Both shut down the system but in different ways

Answer 27

A) ‘shutdown -h now’ halts the system but does not power it off, ‘systemctl poweroff’ powers off the system

Question 28

Which command reboots the system after a 1-minute delay?
A) shutdown -r +1
B) shutdown -h +1
C) reboot -1
D) systemctl reboot -1

Answer 28

A) shutdown -r +1

Question 29

What does the command ‘systemctl list-units –type=target’ display?
A) List of all systemd services
B) List of all mounted filesystems
C) List of all systemd targets
D) List of all running processes

Answer 29

C) List of all systemd targets

Question 30

Which runlevel represents a shutdown in SysV init?
A) 0
B) 1
C) 3
D) 6

Answer 30

A) 0