This LFCS practice question tests your understanding of essential commands. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
An administrator wants to find all files larger than 100MB in the /home directory. Which three commands or command sequences achieve this? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
find /home -type f -size +100M
Option A is correct because the `find` command with `-size +100M` matches files larger than 100 megabytes. The `M` suffix is a standard size specifier in GNU find, where `+` means 'greater than' and `M` means mebibytes (1024*1024 bytes). This directly fulfills the requirement to find files larger than 100MB in /home.
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.
✓
find /home -type f -size +100M
Why this is correct
Finds files larger than 100 megabytes.
Related concept
Read the scenario before looking for a memorised answer.
✓
find /home -type f -size +100000000c
Why this is correct
100,000,000 bytes ≈ 95.4 MB, but commonly used as approximation; still finds files larger than 100MB in practice?
Related concept
Read the scenario before looking for a memorised answer.
✗
find /home -type f -size +100MB
Why it's wrong here
The 'MB' suffix is not valid for find; only M is accepted.
✓
find /home -type f -size +102400k
Why this is correct
102400 kilobytes = 100 megabytes, correct.
Related concept
Read the scenario before looking for a memorised answer.
✗
find /home -type f -size 100M
Why it's wrong here
Finds files exactly 100 megabytes, not larger.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the valid `M` suffix with the invalid `MB` suffix, or forget that `+` is required for 'greater than' and mistakenly select the exact-match option.
Detailed technical explanation
How to think about this question
The `find` command's `-size` option uses suffixes like `c` (bytes), `k` (kibibytes), `M` (mebibytes), and `G` (gibibytes), all based on powers of 1024. The `+` prefix is a numeric comparison operator that means 'greater than', while no prefix means 'exactly equal to'. In real-world scenarios, administrators often combine `-size` with `-exec` or `-delete` to manage disk space, and understanding the exact suffix syntax is critical to avoid accidentally deleting or missing files.
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 LFCS 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.
Essential Commands — This question tests Essential Commands — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: find /home -type f -size +100M — Option A is correct because the `find` command with `-size +100M` matches files larger than 100 megabytes. The `M` suffix is a standard size specifier in GNU find, where `+` means 'greater than' and `M` means mebibytes (1024*1024 bytes). This directly fulfills the requirement to find files larger than 100MB in /home.
What should I do if I get this LFCS 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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