On a host using systemd-networkd you need to see, for every link, whether networkd has actually configured it or is leaving it unmanaged. Which command reports that?
LPIC-1 Exam 102-500, objective 109. Networking fundamentals easy
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How these questions are written — where each question comes from, what the verification ledger records, and what happens when one is found wrong.
The options
Correct networkctl list
Correct. It prints one row per link with its index, name, type, operational state and, in the SETUP column, networkd's own view: configured, configuring, unmanaged and so on. Running networkctl with no verb produces the same listing.
Not correct ip link show
Wrong. iproute2 reports the kernel's view of each link, such as UP or DOWN and the MAC address. It knows nothing about which daemon, if any, has taken responsibility for the interface.
Not correct nmcli device status
Wrong. That is the equivalent listing for NetworkManager. On a networkd-only host NetworkManager is not running, so the command is either absent or reports nothing useful.
Not correct systemctl status systemd-networkd
Wrong. It shows whether the service unit is running, plus recent log lines. It does not enumerate links or their configuration state.
Why
networkctl is the client for systemd-networkd, in the same way nmcli is the client for NetworkManager. `networkctl list` gives the per-link summary, `networkctl status enp1s0` expands one link with its addresses, routes and the .network file that matched, and `networkctl reload` picks up edited configuration files. An interface showing unmanaged has no matching .network file.
Where this comes from
- Cited
- manual page networkctl(1)
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 109 and space the ones you get wrong.
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