easyMultiple ChoiceObjective-mapped
XK0-006 Practice Question: Refer to the exhibit
Exhibit
systemd-analyze blame output:
1.234s firewalld.service
0.876s network.service
0.654s postfix.service
0.321s sshd.service
0.123s systemd-logind.serviceRefer to the exhibit. Which service is likely causing the longest boot delay?
⚠ Common exam trap
Candidates may incorrectly assume network.service or sshd.service cause the longest delay because they are network-related, but the systemd-analyze blame output clearly shows firewalld with a higher time value, and the question specifically asks for the longest boot delay.
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
✓
firewalld.service
The exhibit shows that firewalld.service has the longest time in the 'active' state during boot, as indicated by the 'time' column in the systemd-analyze blame output. Firewalld initializes complex netfilter/iptables rules and applies them to all network interfaces, which can be CPU-intensive and take several seconds, especially with many rules or zones. This makes it the primary contributor to boot delay compared to the other listed services.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
sshd.service
Why it's wrong here
0.321s is relatively low.
- ✓
firewalld.service
Why this is correct
Has the highest boot time in the list.
- ✗
network.service
Why it's wrong here
0.876s is less than firewalld.
- ✗
postfix.service
Why it's wrong here
0.654s is not the highest.
Go deeper
Related to this question
Learn chapter
System Services and Startup
Key term
systemd
systemd is a system and service manager for Linux operating systems that initializes and manages processes, services, and system resources after the kernel boots.
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.