LFCS Storage Management Practice Question
Which THREE are valid reasons to use a swap file instead of a swap partition? (Choose three.)
⚠ Common exam trap
It's easy for candidates to assume swap files are always slower than swap partitions, but the question asks for valid reasons to use a swap file, and performance is not one of them; the key is recognizing that swap files offer flexibility (sparse files, resizing, virtualization) at the cost of a slight performance penalty.
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
✓
Can be placed on a filesystem that supports sparse files.
Swap files can be placed on filesystems that support sparse files (e.g., ext4, XFS). A sparse file allocates disk blocks only when data is written, allowing a large swap file to be created without consuming the full physical disk space immediately. This is useful for systems where disk space is at a premium or where swap size needs to be overcommitted.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Can be placed on a filesystem that supports sparse files.
Why this is correct
Sparse files save space until used.
- ✗
Required for hibernation (suspend-to-disk).
Why it's wrong here
Hibernation requires a swap partition.
- ✓
Easier to manage in virtualized environments.
Why this is correct
Adding a swap file is simpler than modifying virtual disk partitions.
- ✗
Faster performance than swap partition.
Why it's wrong here
Swap files may have slightly more overhead due to filesystem layer.
- ✓
Easier to resize without repartitioning.
Why this is correct
Swap files can be easily resized by removing and recreating with new size.
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