Linux+ V7 systemd Services Troubleshooting Quiz

1. A service is stuck in 'activating' state indefinitely. Which timeout directive would prevent this?

TimeoutStartSec=

TimeoutStopSec=

TimeoutIdleSec=

RestartSec=

2. Which environment variable in a systemd service unit file allows passing runtime configuration to the service process?

Environment=

EnvironmentFile=

ExecEnvironment=

RuntimeEnvironment=

3. A service enters a failed state after system updates. What is the first troubleshooting step?

Check the service's journal logs for error messages

Immediately restart the service

Reinstall the service package

Reboot the system

4. Which systemd command validates a unit file for syntax errors before applying changes?

Systemctl validate service-name

Systemctl check service-name

Systemd-analyze verify service-name

Systemctl syntax-check service-name

5. A service has 'WantedBy=multi-user.target' in its [Install] section. What does this enable?

The service starts before the multi-user target

The service automatically starts during multi-user boot

The service is required for multi-user mode

The service can only run in multi-user mode

6. Which journal option displays only ERROR and CRITICAL messages for a service?

Journalctl -u service-name -p err

Journalctl -u service-name --priority=3

Journalctl -u service-name --level=error

Journalctl -u service-name -p 0..2

7. A service requires root privileges but runs under a non-root user account. Which directive specifies the user?

User=

Group=

PrivateUser=

DynamicUser=

8. What does 'systemctl is-active service-name' return if a service has failed?

Active

Failed

Inactive

Dead

9. A service fails with 'ExecStart not found'. What is the most likely cause?

The ExecStart binary path is incorrect or the file does not exist

The service lacks execute permissions

The systemd daemon cannot interpret the command

The service is missing required libraries

10. Which command lists all unit file dependencies and their relationships for troubleshooting?

Systemctl list-dependencies

Systemctl show-dependencies

Systemctl graph

Systemctl analyze

11. What command displays the status of a systemd service and recent log entries?

Systemctl status service-name

Journalctl -u service-name

Systemctl list-units service-name

Systemctl show service-name

12. What does the 'Restart=' directive in a systemd service unit control?

The time delay before restarting

Under which conditions the service automatically restarts

The maximum number of restart attempts

Whether users can manually restart the service

13. A service file contains 'Type=simple' but the service process exits immediately. What is likely the problem?

Systemd expects the process to fork

The process exits before systemd marks it as started

The service requires a socket activation

The service cannot access required files

14. Which systemd target represents the default boot target for a multi-user system?

Graphical.target

Multi-user.target

Basic.target

Default.target

15. A service shows 'inactive (dead)' status. What does this indicate about the service state?

Service crashed during execution

Service is not running and was never started

Service is disabled and cannot start

Service failed due to missing dependencies

16. Which command reloads systemd unit files after editing a service configuration without restarting?

Systemctl reload service-name

Systemctl daemon-reload

Systemctl refresh

Systemctl update

17. A service enters a failed state with exit code 1. Which journal priority level typically indicates this type of error?

DEBUG

INFO

ERR

NOTICE

18. What is the correct command to view all systemd journal entries for a specific service since the last boot?

Journalctl -u service-name -b

Journalctl service-name --boot

Systemctl journal service-name

Journalctl --service service-name

19. A service fails to start because a required dependency is missing. Which directive in the unit file specifies dependencies?

Requires=

Wants=

Before=

PartOf=

20. Which file location contains systemd service unit files installed by the system package manager?

/etc/systemd/system/

/usr/lib/systemd/system/

/run/systemd/system/

/var/systemd/system/

Linux+ V7 Troubleshooting Failed systemd Services Quiz