mediumMultiple ChoiceObjective-mapped
XK0-006 Practice Question: Refer to the exhibit
Exhibit
Refer to the exhibit. Filesystem Size Used Avail Use% Mounted on /dev/sda1 20G 19G 1.0G 95% / /dev/sda2 50G 30G 20G 60% /var /dev/sda3 30G 10G 20G 33% /home
Refer to the exhibit. An administrator is troubleshooting an issue where services cannot write log files. Based on the output, which filesystem is most likely the cause?
⚠ Common exam trap
CompTIA often tests the misconception that log files always reside on a separate /var partition, but in many default configurations, /var is part of the root filesystem, so a full root partition directly impacts log writes.
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/sda1 (/)
The output shows that the root filesystem /dev/sda1 mounted on / is at 95% usage. Since log files are typically written under /var/log, which resides on the root partition unless /var is a separate mount point, a nearly full root filesystem prevents services from writing log files. The correct answer is D because the root filesystem is nearly full, causing the write failures.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
/dev/sda3 (/home)
Why it's wrong here
Has plenty of space.
- ✗
Swap partition
Why it's wrong here
Not shown and not directly related to log writes.
- ✗
/dev/sda2 (/var)
Why it's wrong here
Still has free space.
- ✓
/dev/sda1 (/)
Why this is correct
Root at 95% is nearly full.
Go deeper
Related to this question
Learn chapter
Navigating the Filesystem
Key term
Mount
Mounting is the process of making a file system or storage device accessible to a computer's operating system by attaching it to a specific directory in the existing directory tree.
Key term
Output
In IT service management, output is the result or deliverable produced by a process, system, or component, such as data, reports, or services delivered to a customer.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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