LPIC-2 Practice Question: Block Devices, Filesystems and Advanced Storage
This LPIC-2 practice question tests your understanding of block devices, filesystems and advanced storage. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
UUID=ijkl-9012 /data ext4 defaults 0 0
Option D is correct because the administrator wants to mount /dev/sdb1 using its UUID, and the exhibit (not shown) indicates that the UUID of /dev/sdb1 is 'ijkl-9012'. The correct /etc/fstab syntax uses the 'UUID=' prefix followed by the actual UUID value, the mount point, filesystem type, options, dump, and pass fields. This ensures the filesystem is identified by its universally unique identifier, which remains stable even if the device name changes.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
/dev/sdb1 /data ext4 defaults 0 0
Why it's wrong here
This uses the device name, not the UUID as requested.
✗
PARTUUID=ijkl-9012 /data ext4 defaults 0 0
Why it's wrong here
PARTUUID should be used with PARTUUID=, and ijkl-9012 is not a PARTUUID.
✗
UUID=12345678-01 /data ext4 defaults 0 0
Why it's wrong here
12345678-01 is the PARTUUID, not the filesystem UUID.
✓
UUID=ijkl-9012 /data ext4 defaults 0 0
Why this is correct
This entry uses the correct filesystem UUID from blkid.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse UUID (filesystem identifier) with PARTUUID (partition identifier) or mistakenly use the wrong UUID value from the exhibit, leading them to select an option with an incorrect or mismatched identifier.
Detailed technical explanation
How to think about this question
The UUID in /etc/fstab refers to the filesystem UUID, which is stored in the superblock of the ext4 filesystem and can be viewed with 'blkid' or 'lsblk -f'. Using UUIDs ensures mounts persist across reboots even if disk enumeration order changes (e.g., after adding or removing drives). The PARTUUID is a separate identifier stored in the GPT partition table and is used for partition-level identification, not filesystem-level; confusing the two is a common source of mount failures.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Block Devices, Filesystems and Advanced Storage — This question tests Block Devices, Filesystems and Advanced Storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: UUID=ijkl-9012 /data ext4 defaults 0 0 — Option D is correct because the administrator wants to mount /dev/sdb1 using its UUID, and the exhibit (not shown) indicates that the UUID of /dev/sdb1 is 'ijkl-9012'. The correct /etc/fstab syntax uses the 'UUID=' prefix followed by the actual UUID value, the mount point, filesystem type, options, dump, and pass fields. This ensures the filesystem is identified by its universally unique identifier, which remains stable even if the device name changes.
What should I do if I get this LPIC-2 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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