LFCS Operation of Running Systems Practice Question
Exhibit
Refer to the exhibit. ``` $ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 20G 15G 5.0G 75% / /dev/sdb1 100G 90G 10G 90% /data ```
Refer to the exhibit. Which filesystem is close to full capacity?
⚠ Common exam trap
The trap here is that candidates may misinterpret 'close to full capacity' as any value above 50% or assume both are equally close, but the question specifically tests the ability to compare percentages and identify the higher usage.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
/dev/sdb1
The `df -h` output (not shown) indicates that /dev/sdb1 is at 90% capacity, while /dev/sda1 is at 75%. A filesystem at 90% usage is close to full capacity, making D the correct answer. The question tests the ability to read disk usage percentages and identify the one nearing capacity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Both are at 75% or less
Why it's wrong here
/dev/sdb1 is at 90%.
- ✗
/dev/sda1
Why it's wrong here
Only 75% used, not as close to full.
- ✗
Neither
Why it's wrong here
/dev/sdb1 is near full.
- ✓
/dev/sdb1
Why this is correct
90% used, very close to capacity.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LFCS practice question is part of Courseiva's free Linux Foundation 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 LFCS exam.