This LPIC-1 practice question tests your understanding of administrative tasks. 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 three commands are commonly used to display information about running processes?
top
Realtime process viewer.
pkill
Why wrong: Used to kill processes by name, not display information.
kill
Why wrong: Used to send signals to processes, not to display them.
htop
Interactive process viewer with more features.
ps
Reports snapshot of current processes.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
top
The `top` command (option A) is a standard Linux utility that provides a real-time, dynamic view of running processes, including CPU and memory usage, and is commonly used for process monitoring. It is a core tool for displaying process information, making it correct for this question.
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.
top
Why this is correct
Realtime process viewer.
Related concept
Read the scenario before looking for a memorised answer.
pkill
Why it's wrong here
Used to kill processes by name, not display information.
kill
Why it's wrong here
Used to send signals to processes, not to display them.
htop
Why this is correct
Interactive process viewer with more features.
Related concept
Read the scenario before looking for a memorised answer.
ps
Why this is correct
Reports snapshot of current processes.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates may confuse commands that manipulate processes (like `kill` and `pkill`) with commands that display process information, leading them to incorrectly select those options.
Detailed technical explanation
The `top` command reads process data from the `/proc` filesystem, which is a virtual filesystem that exposes kernel data structures. It updates its display at a configurable interval (default 3 seconds) and can sort processes by various metrics like CPU usage or memory consumption. In contrast, `ps` (option E) provides a snapshot of processes at a single point in time, while `htop` (option D) is an interactive process viewer that offers a more user-friendly interface with color coding and mouse support, but both are valid for displaying process information.
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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Administrative Tasks — This question tests Administrative Tasks — Read the scenario before looking for a memorised answer..
The correct answer is: top — The `top` command (option A) is a standard Linux utility that provides a real-time, dynamic view of running processes, including CPU and memory usage, and is commonly used for process monitoring. It is a core tool for displaying process information, making it correct for this question.
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.
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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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