mediumMultiple Choice
XK0-006 Practice Question: Refer to the exhibit
Exhibit
$ sudo tuned-adm list Available profiles: - balanced - desktop - latency-performance - network-latency - network-throughput - powersave - throughput-performance - virtual-guest - virtual-host Current active profile: balanced $ sudo tuned-adm recommend throughput-performance
Refer to the exhibit. An administrator wants to optimize a server running a high-throughput database application. Which command should be used to apply the recommended profile?
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
✓
sudo tuned-adm profile throughput-performance
The tuned-adm recommend command suggests 'throughput-performance', which is suitable for database workloads. The correct command to apply it is 'tuned-adm profile throughput-performance'.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
sudo tuned-adm profile throughput-performance
Why this is correct
`tuned-adm profile throughput-performance` activates the tuned daemon's throughput-performance profile, which raises kernel dirty-ratio thresholds, uses the performance CPU governor and disables power-saving states — directly satisfying the stem's high-throughput database requirement. The `sudo` prefix is needed because switching profiles modifies system-wide tuning state.
- ✗
sudo tuned-adm profile balanced
Why it's wrong here
The balanced profile targets general-purpose workloads, not the throughput and latency demands of a database server, so it leaves I/O and CPU tuning misaligned. It is tempting because balanced is tuned's default starting point, and it would be the right choice for an ordinary mixed-use server where no specialised profile applies.
- ✗
sudo tuned-adm off
Why it's wrong here
tuned-adm off disables tuning entirely and reverts the system to untuned defaults, removing any profile-based optimisation rather than applying one. It is tempting as a reset or troubleshooting step, and it would be correct when diagnosing whether tuned itself is causing a performance regression.
- ✗
sudo systemctl set-default tuned
Why it's wrong here
set-default only changes which systemd target starts at boot; it applies no tuning profile to the running kernel, so performance is unchanged now. It is tempting because it persists configuration across reboots, and it would be correct when making a tuned profile survive restarts rather than activating one immediately.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 practice question is part of Courseiva's free CompTIA 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 XK0-006 exam.