XK0-006 Troubleshooting Practice Question
An administrator is troubleshooting a service that fails to start. They want to trace the system calls made by the service binary. Which command should they use?
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
✓
strace
strace traces system calls and signals. It is used to debug what a program is doing at the kernel level.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ltrace
Why it's wrong here
ltrace traces library calls, not system calls.
- ✗
dmesg
Why it's wrong here
dmesg shows kernel ring buffer messages, not per-process traces.
- ✓
strace
Why this is correct
Correct tool for system call tracing.
- ✗
lsof
Why it's wrong here
lsof lists open files, not system call traces.
Go deeper
Related to this question
Learn chapter
Process Management and System Monitoring
Key term
Kernel
The kernel is the core program of an operating system that manages hardware resources and provides essential services for all other software to run.
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.
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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.