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XK0-006 A process is consuming excessive CPU Practice Question
A process is consuming excessive CPU. The administrator wants to reduce its priority. Which command should be used?
⚠ Common exam trap
It's easy for candidates to confuse `nice` (which starts a new process with a specified priority) with `renice` (which changes the priority of an existing process), leading candidates to choose option C even though it uses a negative value that increases priority.
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
✓
renice +10 PID
The `renice` command is used to change the priority of an already running process. By specifying `+10`, the administrator increases the nice value, which lowers the process's scheduling priority and reduces its CPU consumption. This directly addresses the requirement to reduce the priority of a currently executing process.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
renice +10 PID
Why this is correct
Lowers priority of a running process.
- ✗
taskset -c 0 PID
Why it's wrong here
Sets CPU affinity, not priority.
- ✗
nice -n -20 PID
Why it's wrong here
Starts a new process with high priority, not for existing.
- ✗
chrt -r 99 PID
Why it's wrong here
Sets real-time scheduling, not priority.
Go deeper
Related to this question
Learn chapter
Process Management and System Monitoring
Key term
Process
In IT service management, a process is a structured set of activities designed to accomplish a specific objective, such as managing incidents or changes, by transforming inputs into defined outputs.
Key term
Value
Value is the perceived worth, benefit, or usefulness that a service, product, or activity delivers to stakeholders, especially customers and the business.
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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.