This LPIC-1 practice question tests your understanding of system architecture. 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.
Exhibit
01:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068E PCI-Express Fusion-MPT SAS (rev 08)
Subsystem: LSI Logic / Symbios Logic SAS1068E PCI-Express Fusion-MPT SAS
Flags: bus master, fast devsel, latency 0, IRQ 24
I/O ports at ec00 [size=256]
Memory at f7ffc000 (64-bit, non-prefetchable) [size=16K]
Memory at f7ff8000 (64-bit, non-prefetchable) [size=16K]
Expansion ROM at f7f00000 [disabled] [size=256K]
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [68] Express Endpoint, MSI 00
Capabilities: [98] Power Management version 3
Capabilities: [a0] MSI-X: Enable- Count=15 Masked-
Kernel driver in use: mpt3sas
Kernel modules: mpt3sas
Refer to the exhibit. The system has multiple SAS drives attached to this controller, but one of them is not detected during boot. Which command is most likely to provide information about the device detection order?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
dmesg | grep -i scsi
Option B is correct because dmesg shows kernel ring buffer messages with timestamps, allowing you to see the order in which devices were detected. Option A (lsblk) shows block devices but not detection order. Option C (lsscsi) lists SCSI devices currently present but not their order. Option D (cat /proc/scsi/scsi) shows attached SCSI devices but not detection order.
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.
✗
cat /proc/scsi/scsi
Why it's wrong here
/proc/scsi/scsi shows attached devices but not detection order.
✗
lsblk
Why it's wrong here
lsblk lists block devices but does not show detection order.
✓
dmesg | grep -i scsi
Why this is correct
dmesg displays kernel messages with timestamps, revealing the order of SCSI device detection.
Clue confirmation
The clue words "most likely", "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
lsscsi
Why it's wrong here
lsscsi lists SCSI devices but not the order in which they were detected.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
/proc/scsi/scsi shows attached devices but not detection order.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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-1 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 LPIC-1 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
System Architecture — This question tests System Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: dmesg | grep -i scsi — Option B is correct because dmesg shows kernel ring buffer messages with timestamps, allowing you to see the order in which devices were detected. Option A (lsblk) shows block devices but not detection order. Option C (lsscsi) lists SCSI devices currently present but not their order. Option D (cat /proc/scsi/scsi) shows attached SCSI devices but not detection order.
What should I do if I get this LPIC-1 question wrong?
Identify which LPIC-1 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely", "which command". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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