Taking a link down with ifconfig | LinuC Level 1 102 Exam original practice question

1.07.3Basic

Use net-tools ifconfig to administratively disable enp1s0.

Do not edit configuration files.

Which command is appropriate?

Hint 1: Focus on the observed layer

Separate interface counters, sockets, DNS lookups, path tracing, and routing changes before comparing the diagnostic commands.

Hint 2: Key terms

Review the short definitions of interface counters, sockets, DNS, path tracing, and routes involved.

ifconfig: A legacy command for displaying or configuring network interfaces.
down: A state value that disables an interface administratively.
ifconfig -a: A form that displays all interfaces, including inactive ones.
ifdown: A command that stops an interface using saved configuration.
route del: An operation that removes a route from the routing table.

Detailed explanation

Correctifconfig enp1s0 down

Correct. It administratively brings enp1s0 down.

Incorrectifconfig -a enp1s0

Incorrect. -a displays all interfaces.

Incorrectifdown --show enp1s0

Incorrect. This is not the standard ifconfig stop syntax.

Incorrectroute del enp1s0

Incorrect. A route operation does not directly change link state.

An example you can run in a temporary verification environment.

ifconfig --help 2>&1 | sed -n '1,8p' || printf '%s
' 'ifconfig is not installed'

ifconfigの使用方法、または未導入メッセージ

Foundation review

Kernel-maintained counts of packets, errors, and drops at an interface.

A local or remote endpoint associated with a transport protocol and process.

A diagnostic method that observes hops and path limits toward a destination.

Question IDKL-102-1001

Environmentnet-tools ifconfig help / 状態変更なし

Last technical review2026-08-13

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