LPIC-1 Essential System Services and Networking Practice Question
An administrator wants to combine two network interfaces into a single logical interface for redundancy and increased throughput. The system uses NetworkManager. Which method is currently recommended to achieve this?
⚠ Common exam trap
Watch out — candidates often confuse the older `ifenslave` or `teamd` tools with the modern NetworkManager approach, or mistakenly think that `/proc/net/bonding` is writable, when in fact `nmcli` is the correct, supported method for bond configuration on current systems.
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
✓
Configure a bond using nmcli
NetworkManager is the default network service on modern Linux distributions, and its recommended tool for managing network bonds is `nmcli`. Using `nmcli`, an administrator can create a bond master interface and assign slave interfaces with the `nmcli connection add type bond` and `nmcli connection add type bond-slave` commands, which ensures proper integration with NetworkManager's configuration and state management. This method is preferred over legacy tools like `ifenslave` or `teamd` because it aligns with the current systemd and NetworkManager ecosystem.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use ifenslave to enslave interfaces
Why it's wrong here
ifenslave is a legacy tool; modern systems should use NetworkManager.
- ✓
Configure a bond using nmcli
Why this is correct
NetworkManager can manage bonded interfaces using nmcli, making it the recommended method.
- ✗
Set up a team interface using teamd
Why it's wrong here
Teaming is an older technology; bonding is preferred with NetworkManager.
- ✗
Edit /proc/net/bonding directly
Why it's wrong here
This is deprecated and not managed by NetworkManager.
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