LPIC-2 Linux Kernel and System Startup Practice Question
Exhibit
Module Size Used by usb_storage 24576 0 crct10dif_pclmul 16384 0 crc32_pclmul 16384 0 ghash_clmulni_intel 16384 0 aesni_intel 131072 0 x86_pkg_temp_thermal 16384 0 coretemp 16384 0 kvm_intel 102400 0 kvm 139264 1 kvm_intel
Refer to the exhibit. Which module is currently in use by another module?
⚠ Common exam trap
The trap here is that candidates often misinterpret the 'Used by' column as showing which modules are being used by the listed module, rather than which modules are using the listed module, leading them to incorrectly select `kvm_intel` or `usb_storage`.
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
✓
kvm
The `lsmod` command shows that `kvm` has a 'Used by' count of 1, indicating another module is currently using it. The 'Used by' column lists the modules that depend on the given module, so `kvm` is in use by another module (likely `kvm_intel` or `kvm_amd`). This is the correct interpretation because the question asks which module is currently in use by another module, and `kvm` is the one with a non-zero 'Used by' value.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
usb_storage
Why it's wrong here
usb_storage has 'Used by 0'.
- ✗
kvm_intel
Why it's wrong here
kvm_intel has 'Used by 0' (it uses kvm, but is not used by another module).
- ✗
aesni_intel
Why it's wrong here
aesni_intel has 'Used by 0'.
- ✓
kvm
Why this is correct
kvm is used by kvm_intel.
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