A minimal server uses systemd-networkd. Which file and content give interface enp1s0 the static address 10.0.0.10/24 with gateway 10.0.0.1?

LPIC-1 Exam 102-500, objective 109. Networking fundamentals medium

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The options

Correct /etc/systemd/network/10-wired.network containing [Match] Name=enp1s0 and [Network] Address=10.0.0.10/24, Gateway=10.0.0.1

Correct. A .network file selects an interface in its [Match] section and configures the addressing in [Network]. Static addressing is expressed with Address= and Gateway=.

Not correct /etc/systemd/network/10-wired.netdev containing [Match] Name=enp1s0 and [Network] Address=10.0.0.10/24

Wrong. A .netdev file creates a virtual device such as a bridge, VLAN or bond. It does not carry addressing for an existing physical interface.

Not correct /etc/systemd/network/10-wired.link containing [Match] Name=enp1s0 and [Link] Address=10.0.0.10/24

Wrong. A .link file is applied by udev and sets device-level properties such as the naming policy, MAC address and MTU, not IP configuration.

Not correct /etc/systemd/networkd.conf containing [Network] Interface=enp1s0, Address=10.0.0.10/24

Wrong. networkd.conf holds daemon-wide defaults. Per-interface configuration always lives in separate files under /etc/systemd/network/.

Why

systemd-networkd reads three kinds of files from /etc/systemd/network/: .link for udev-level device properties, .netdev to create virtual devices, and .network to configure addressing on a matched interface. Files are processed in lexicographic order of filename, which is why a numeric prefix is conventional, and the first .network file whose [Match] section matches an interface is the one applied. For DHCP the [Network] section takes DHCP=yes in place of Address= and Gateway=.

Where this comes from

Cited
manual page systemd.network(5)

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