This LPIC-1 practice question tests your understanding of administrative tasks. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE steps are necessary to configure a static IP address using ifcfg files on a RHEL-based system? (Choose THREE.)
Edit /etc/sysconfig/network-scripts/ifcfg-eth0
Correct: the ifcfg file must be edited.
Set ONBOOT=yes
Correct: ensures the interface starts at boot.
Run 'systemctl restart network'
Why wrong: This applies the configuration but is not a configuration step itself.
Run 'ip addr add 192.168.1.10/24 dev eth0'
Why wrong: This is a temporary change, not persistent.
Set BOOTPROTO=static
Correct: indicates static IP configuration.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Edit /etc/sysconfig/network-scripts/ifcfg-eth0
Option A is correct because on RHEL-based systems, persistent network interface configuration is stored in files named `/etc/sysconfig/network-scripts/ifcfg-<interface>`. Editing this file allows you to define static IP parameters that survive reboots. This is the standard method for configuring static IP addresses using ifcfg files.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Edit /etc/sysconfig/network-scripts/ifcfg-eth0
Why this is correct
Correct: the ifcfg file must be edited.
Related concept
Read the scenario before looking for a memorised answer.
Set ONBOOT=yes
Why this is correct
Correct: ensures the interface starts at boot.
Related concept
Read the scenario before looking for a memorised answer.
Run 'systemctl restart network'
Why it's wrong here
This applies the configuration but is not a configuration step itself.
Run 'ip addr add 192.168.1.10/24 dev eth0'
Why it's wrong here
This is a temporary change, not persistent.
Set BOOTPROTO=static
Why this is correct
Correct: indicates static IP configuration.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse runtime commands (like `ip addr add`) with persistent configuration steps, or they mistakenly think restarting the network service is a configuration step rather than an activation step.
Detailed technical explanation
The ifcfg file uses variables such as `BOOTPROTO=static` to disable DHCP and `ONBOOT=yes` to ensure the interface starts at boot. The `ip` command from the iproute2 suite is used for runtime changes, but persistent configuration relies on the ifcfg file and the network service (or NetworkManager) reading it. A common real-world scenario is configuring a server with a static IP in a datacenter where DHCP is not available, requiring careful editing of the ifcfg file and then restarting the network service to apply changes.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the LPIC-1 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Administrative Tasks — This question tests Administrative Tasks — Read the scenario before looking for a memorised answer..
The correct answer is: Edit /etc/sysconfig/network-scripts/ifcfg-eth0 — Option A is correct because on RHEL-based systems, persistent network interface configuration is stored in files named `/etc/sysconfig/network-scripts/ifcfg-<interface>`. Editing this file allows you to define static IP parameters that survive reboots. This is the standard method for configuring static IP addresses using ifcfg files.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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