This LPIC-2 practice question tests your understanding of block devices, filesystems and advanced storage. 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 of the following is the primary configuration file for the udev device manager?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
/etc/udev/rules.d/
Why wrong: Duplicate of B.
/lib/udev/rules.d/
Why wrong: This is a directory for system rules, not a config file.
/etc/udev/rules.d/
Why wrong: This is a directory for custom rules, not a config file.
/etc/udev/udev.conf
This is the primary udev configuration file.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
/etc/udev/udev.conf
The primary configuration file for the udev device manager is /etc/udev/udev.conf. This file sets global parameters such as the device timeout, logging priority, and the default permissions for device nodes. While custom rules are placed in /etc/udev/rules.d/, the main configuration file that controls udev's behavior is udev.conf.
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.
/etc/udev/rules.d/
Why it's wrong here
Duplicate of B.
/lib/udev/rules.d/
Why it's wrong here
This is a directory for system rules, not a config file.
/etc/udev/rules.d/
Why it's wrong here
This is a directory for custom rules, not a config file.
/etc/udev/udev.conf
Why this is correct
This is the primary udev configuration file.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse the directory for custom rules (/etc/udev/rules.d/) with the actual configuration file, or they think the system rules directory (/lib/udev/rules.d/) is the primary config, but the question specifically asks for the 'primary configuration file' which is udev.conf.
Detailed technical explanation
The udev.conf file uses a simple key-value format (e.g., 'udev_log="info"') and is parsed by udevd at startup. It controls the behavior of the udev daemon, including the timeout for waiting for device events and the default mode for device nodes. In real-world scenarios, misconfiguring udev.conf can cause devices to fail to appear or cause systemd-udevd to hang, especially when 'timeout' is set too low for slow-responding hardware.
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-2 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
Block Devices, Filesystems and Advanced Storage — This question tests Block Devices, Filesystems and Advanced Storage — Read the scenario before looking for a memorised answer..
The correct answer is: /etc/udev/udev.conf — The primary configuration file for the udev device manager is /etc/udev/udev.conf. This file sets global parameters such as the device timeout, logging priority, and the default permissions for device nodes. While custom rules are placed in /etc/udev/rules.d/, the main configuration file that controls udev's behavior is udev.conf.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This LPIC-2 practice question is part of Courseiva's free LPI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LPIC-2 exam.
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