Linux+ V8 Systemd Service Unit Configuration

1. How do you enable a service to start automatically at boot?

Systemctl enable service_name

Systemctl start --boot service_name

Systemctl install service_name

Systemctl activate service_name

Submit

5. What is the effect of 'ProtectSystem=strict' in a service unit?

Allows all filesystem access

Restricts write access to most filesystems

Blocks all network connections

Prevents service from accessing /tmp

6. How do you view the status of a specific systemd service?

Systemctl check service_name

Systemctl status service_name

Systemctl show service_name

Systemctl query service_name

7. What does 'StandardOutput=journal' configure in a service unit?

Logs output to syslog only

Sends service output to systemd journal

Writes output to /var/log/messages

Discards all service output

8. Which systemd target represents multi-user mode with networking?

Graphical.target

Multi-user.target

Network.target

Default.target

9. In systemd, what does the 'BindsTo' dependency accomplish?

Service starts with target only

Service stops if dependency stops

Service waits for dependency to start

Service requires dependency to restart

10. What is the function of the 'RestartSec' directive?

Maximum time service can run

Delay before service restarts

Timeout for service startup

Duration before forced termination

11. Which directory typically contains system-wide systemd service unit files?

/etc/systemd/system

/usr/lib/systemd/system

/var/systemd/services

/opt/systemd/units

12. What does 'Type=forking' mean in systemd service configuration?

Service creates child processes only

Main process forks and parent exits

Service spawns multiple workers

Service uses systemd socket activation

13. Which directive ensures a service runs with specific user and group permissions?

User= and Group=

UID= and GID=

Owner= and Permissions=

Privilege= and Rights=

14. What is the purpose of 'ExecStart' in a systemd service unit?

Specify commands to run before service stops

Define the main command to execute

Set startup delay in seconds

Configure service timeout duration

15. In the [Service] section, what does 'Restart=always' accomplish?

Service restarts only on failure

Service restarts whenever it exits

Service restarts only on abnormal exit

Service never restarts automatically

16. Which command reloads systemd configuration without restarting running services?

Systemctl restart

Systemctl daemon-reload

Systemctl reload-configuration

Systemctl refresh

17. What is the difference between 'Requires' and 'Wants' in unit dependencies?

Requires fails if dependency fails; Wants continues

Wants is stronger than Requires

Requires is optional; Wants is mandatory

No functional difference between them

18. Which systemd directive specifies that a service should start only after the network is available?

Requires=network.target

After=network-online.target

Wants=network.service

BindsTo=network.target

19. In a systemd service file, what does the 'Type=simple' directive indicate?

Service forks into background

Main process remains in foreground

Service notifies systemd when ready

Service runs as a one-shot command

20. What is the primary purpose of the [Unit] section in a systemd service file?

Define service startup parameters

Specify metadata, dependencies, and documentation

Configure resource limits and cgroups

Set environment variables for the service

Linux+ V8 Systemd Service Unit Configuration Quiz