LPIC-2 Practice Question: Block Devices, Filesystems and Advanced Storage
Which of the following is the primary configuration file for the udev device manager?
⚠ Common exam trap
Many candidates 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.
Answer choices
Why each option matters
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.
Answer analysis
Option-by-option breakdown
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
/etc/udev/rules.d/ is a directory containing custom udev rules, not the primary configuration file.
- ✗
/lib/udev/rules.d/
Why it's wrong here
/lib/udev/rules.d/ is a directory for system-provided udev rules, not the primary configuration file.
- ✗
/etc/udev/rules.d/
Why it's wrong here
/etc/udev/rules.d/ is identical to option A; it is a directory for custom rules, not the primary configuration file.
- ✓
/etc/udev/udev.conf
Why this is correct
/etc/udev/udev.conf is the primary configuration file for the udev device manager, setting global parameters like device timeout and logging.
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