LPIC-1 System Architecture Practice Question
Which command displays information about currently loaded kernel modules?
⚠ Common exam trap
Many exam-takers confuse `lsmod` (list loaded modules) with `modinfo` (show module metadata) or `modprobe -l` (list available modules), because all three commands relate to kernel modules but serve distinct purposes.
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
✓
lsmod
The `lsmod` command reads the `/proc/modules` file to display a list of all currently loaded kernel modules, showing their name, size, usage count, and dependent modules. This is the standard tool for querying the current module state in the Linux kernel.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
insmod
Why it's wrong here
Insmod loads a module, it does not list them.
- ✗
modinfo
Why it's wrong here
Modinfo shows module metadata, not which are loaded.
- ✓
lsmod
Why this is correct
Lsmod shows currently loaded kernel modules from /proc/modules.
- ✗
modprobe -l
Why it's wrong here
This lists available modules, not loaded ones.
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