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.
Which TWO commands display UUIDs of block devices? (Select TWO)
parted /dev/sda print
Why wrong: parted shows partition table but not UUIDs.
lsblk -o UUID
Shows UUID column.
udevadm info --query=all --name=/dev/sda
Why wrong: Shows udev information including UUID but not specifically filesystem UUID.
blkid
Displays UUIDs and other attributes.
fdisk -l
Why wrong: fdisk -l lists partitions but not UUIDs by default.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
lsblk -o UUID
B is correct because `lsblk -o UUID` explicitly lists the UUID column for all block devices, showing the filesystem UUIDs. D is correct because `blkid` is the dedicated command to display block device attributes, including UUIDs, by reading the udev database or directly probing the device.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
parted /dev/sda print
Why it's wrong here
parted shows partition table but not UUIDs.
lsblk -o UUID
Why this is correct
Shows UUID column.
Related concept
Read the scenario before looking for a memorised answer.
udevadm info --query=all --name=/dev/sda
Why it's wrong here
Shows udev information including UUID but not specifically filesystem UUID.
blkid
Why this is correct
Displays UUIDs and other attributes.
Related concept
Read the scenario before looking for a memorised answer.
fdisk -l
Why it's wrong here
fdisk -l lists partitions but not UUIDs by default.
Common exam traps
The trap here is that candidates often confuse partition UUIDs (shown by `fdisk -l` for GPT disks) with filesystem UUIDs, or assume `parted` or `udevadm` are standard tools for listing filesystem UUIDs, when in fact only `blkid` and `lsblk` are the correct commands for that specific task.
Trap categories for this question
Command / output trap
parted shows partition table but not UUIDs.
Detailed technical explanation
Under the hood, `blkid` uses libblkid to probe the superblock of block devices for filesystem metadata, including UUIDs, while `lsblk -o UUID` reads this information from the sysfs filesystem and the udev database, which is populated by udev rules that run blkid on device events. A subtle behavior is that `lsblk` may show an empty UUID column for devices without a recognized filesystem, whereas `blkid` will simply not output anything for such devices; both rely on the same underlying probing mechanism but present the data differently.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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 — study guide chapter
Learn the concepts, then practise the questions
Block Devices, Filesystems and Advanced Storage practice questions
Targeted practice on this topic area only
All LPIC-2 questions
511 questions across all exam domains
Linux Professional Institute Certification Level 2 LPIC-2 study guide
Full concept coverage aligned to exam objectives
LPIC-2 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise LPIC-2 questions linked to Linux Kernel and System Startup.
Practise LPIC-2 questions linked to Block Devices, Filesystems and Advanced Storage.
Practise LPIC-2 questions linked to Advanced Networking Configuration.
Practise LPIC-2 questions linked to DNS, Web and Mail Services.
Practise LPIC-2 questions linked to File Sharing and Samba.
Practise LPIC-2 questions linked to System Security.
Practise LPIC-2 questions linked to Network Client Management.
Practise LPIC-2 questions linked to LPIC-2 fundamentals.
Practise LPIC-2 questions linked to LPIC-2 scenario.
Practise LPIC-2 questions linked to LPIC-2 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Block Devices, Filesystems and Advanced Storage — This question tests Block Devices, Filesystems and Advanced Storage — Read the scenario before looking for a memorised answer..
The correct answer is: lsblk -o UUID — B is correct because `lsblk -o UUID` explicitly lists the UUID column for all block devices, showing the filesystem UUIDs. D is correct because `blkid` is the dedicated command to display block device attributes, including UUIDs, by reading the udev database or directly probing the device.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 25, 2026
This LPIC-2 practice question is part of Courseiva's free LPI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LPIC-2 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.