This LPIC-1 practice question tests your understanding of system architecture. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 command displays the system's architecture (e.g., x86_64)?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
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.
lscpu
Why wrong: lscpu shows architecture but also other CPU info; not the only correct answer.
All of the above
All three commands can display the system architecture.
arch
Why wrong: While arch shows architecture, it is not the only correct answer.
uname -m
Why wrong: While uname -m does show architecture, it is not the only correct answer.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
All of the above
Option B ('All of the above') is correct because each of the listed commands—lscpu, arch, and uname -m—can display the system's architecture (e.g., x86_64). lscpu parses /proc/cpuinfo to show architecture details, arch prints the machine hardware name directly, and uname -m outputs the kernel's machine hardware name, all of which report the same architecture identifier on a given system.
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.
lscpu
Why it's wrong here
lscpu shows architecture but also other CPU info; not the only correct answer.
All of the above
Why this is correct
All three commands can display the system architecture.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
arch
Why it's wrong here
While arch shows architecture, it is not the only correct answer.
uname -m
Why it's wrong here
While uname -m does show architecture, it is not the only correct answer.
Common exam traps
The trap here is that candidates often assume only one command can display architecture, overlooking that multiple commands (lscpu, arch, uname -m) all serve this purpose, making 'All of the above' the correct answer when it is listed.
Trap categories for this question
Command / output trap
lscpu shows architecture but also other CPU info; not the only correct answer.
Detailed technical explanation
Under the hood, uname -m reads the 'machine' field from the uname() system call, which returns the architecture as reported by the kernel (e.g., x86_64 for 64-bit x86 systems). The arch command is essentially a wrapper that calls uname -m, while lscpu reads /proc/cpuinfo and sysfs to provide detailed CPU topology, including architecture. In real-world scenarios, scripts often use uname -m for portability because it is part of POSIX and available on minimal systems, whereas lscpu may require the util-linux package.
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-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
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FAQ
System Architecture — This question tests System Architecture — Read the scenario before looking for a memorised answer..
The correct answer is: All of the above — Option B ('All of the above') is correct because each of the listed commands—lscpu, arch, and uname -m—can display the system's architecture (e.g., x86_64). lscpu parses /proc/cpuinfo to show architecture details, arch prints the machine hardware name directly, and uname -m outputs the kernel's machine hardware name, all of which report the same architecture identifier on a given system.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This LPIC-1 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-1 exam.
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