mediumMultiple ChoiceObjective-mapped
XK0-006 Practice Question: A system administrator wants to limit the CPU and…
A system administrator wants to limit the CPU and memory usage of a specific service to prevent it from affecting other processes. Which Linux feature should be used?
⚠ Common exam trap
Watch out — candidates often confuse process priority tools (nice/renice) with resource limiting tools, not realizing that nice only affects CPU scheduling order, not hard caps on CPU or memory 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
✓
cgroups
C is correct because cgroups (control groups) is the Linux kernel feature designed to limit, account for, and isolate resource usage (CPU, memory, disk I/O, etc.) of process groups. Unlike simple priority adjustments, cgroups enforce hard limits on resource consumption, making them ideal for preventing a specific service from starving other processes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ulimit
Why it's wrong here
ulimit sets limits per user session, not per service.
- ✗
renice
Why it's wrong here
renice adjusts priority of running process.
- ✓
cgroups
Why this is correct
cgroups can limit CPU, memory, I/O for process groups.
- ✗
nice
Why it's wrong here
nice adjusts scheduling priority, not resource limits.
Go deeper
Related to this question
Learn chapter
Linux Fundamentals and History
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
Service
A service is a software component or system that performs a specific function and is available to be used by other programs or users over a network.
About these practice questions
This XK0-006 question is part of Courseiva's 979-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.