XK0-006 Troubleshooting Practice Question
After modifying the network configuration on a RHEL 8 system using NetworkManager, what command should be used to apply the changes without restarting the network service?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
nmcli con up 'System eth0'
nmcli con up <connection> activates the connection with new settings. nmcli connection reload reloads from disk but does not apply to active connections.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
nmcli connection reload
Why it's wrong here
Reloads configuration files but does not apply to current connections.
- ✓
nmcli con up 'System eth0'
Why this is correct
Brings up the connection with updated settings.
- ✗
ifup eth0
Why it's wrong here
ifup is legacy; NetworkManager should be used.
- ✗
systemctl restart NetworkManager
Why it's wrong here
Restarts the entire service, which is unnecessary.
Go deeper
Related to this question
Learn chapter
Process Management and System Monitoring
Key term
nmcli
nmcli is a command-line tool used in Linux to manage network connections, devices, and settings through NetworkManager.
Key term
Service
A service is a software component or system that performs a specific function and is available to be used by other programs or users over a network.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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