- A
Setting limits with edquota.
Why wrong: edquota sets limits but quotaon is needed first.
- B
Running repquota to view quotas.
Why wrong: repquota only reports quota information.
- C
Setting limits with setquota.
Why wrong: setquota also sets limits but quotaon must be active.
- D
Running quotaon to activate quotas.
Correct: quotaon enables quota enforcement after quotacheck.
Question 421 of 513
LFCS Storage Management Practice Question
This LFCS practice question tests your understanding of storage management. 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.
An administrator has enabled quotas on the /home filesystem by adding usrquota,grpquota to /etc/fstab and remounting. Then ran quotacheck -cug /home and it completed successfully. However, users are still able to write beyond their assigned soft limits. What step is missing?
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
✓
Running quotaon to activate quotas.
The missing step is activating quotas with `quotaon`. Even after configuring `/etc/fstab` with `usrquota,grpquota`, remounting the filesystem, and running `quotacheck -cug` to create the quota database files (`aquota.user` and `aquota.group`), quotas remain inactive until explicitly enabled with `quotaon`. Without this command, the kernel does not enforce quota limits, allowing users to exceed soft limits without warning.
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.
- ✗
Setting limits with edquota.
Why it's wrong here
edquota sets limits but quotaon is needed first.
- ✗
Running repquota to view quotas.
Why it's wrong here
repquota only reports quota information.
- ✗
Setting limits with setquota.
Why it's wrong here
setquota also sets limits but quotaon must be active.
- ✓
Running quotaon to activate quotas.
Why this is correct
Correct: quotaon enables quota enforcement after quotacheck.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume running `quotacheck -cug` both creates the quota database and activates quotas, but `quotacheck` only scans and builds the database, while `quotaon` is a separate mandatory step to enable enforcement.
Detailed technical explanation
How to think about this question
Under the hood, the Linux kernel enforces quotas via the `quota_v1` or `quota_v2` format, and the `quotaon` command mounts the quota subsystem by reading the quota files (e.g., `aquota.user`) and enabling enforcement at the VFS (Virtual File System) layer. A common real-world scenario is when administrators forget to run `quotaon` after a reboot or after initial setup, leading to silent non-enforcement; this is especially critical in multi-user environments like shared hosting or university labs where soft limits must trigger warnings.
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.
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FAQ
Questions learners often ask
What does this LFCS question test?
Storage Management — This question tests Storage Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Running quotaon to activate quotas. — The missing step is activating quotas with `quotaon`. Even after configuring `/etc/fstab` with `usrquota,grpquota`, remounting the filesystem, and running `quotacheck -cug` to create the quota database files (`aquota.user` and `aquota.group`), quotas remain inactive until explicitly enabled with `quotaon`. Without this command, the kernel does not enforce quota limits, allowing users to exceed soft limits without warning.
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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Last reviewed: Jul 4, 2026
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