This XK0-005 practice question tests your understanding of system management. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company policy requires all systems to have a specific set of security patches applied. The administrator needs to generate a report listing all installed packages that contain security updates available. Which command sequence should be used on Red Hat-based systems?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
yum check-update
Why wrong: Lists all available updates, not just security.
yum updateinfo list security
Why wrong: Incorrect syntax; should be 'yum updateinfo list --sec'.
yum info-sec
Why wrong: Not a valid command.
yum list-security
Lists security-related updates.
yum list updates
Why wrong: Lists all updateable packages.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
yum list-security
Option D is correct because `yum list-security` (or `dnf list-security`) lists security advisories and the associated packages with available updates. Option A is wrong because `yum check-update` lists all updates, not just security. Option B is wrong because `yum updateinfo list security` is not a valid command; the correct is `yum updateinfo list --sec`. Option C is wrong because `yum list updates` lists all updateable packages. Option E is wrong because `yum info-sec` is not a valid command.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
yum check-update
Why it's wrong here
Lists all available updates, not just security.
yum updateinfo list security
Why it's wrong here
Incorrect syntax; should be 'yum updateinfo list --sec'.
yum info-sec
Why it's wrong here
Not a valid command.
yum list-security
Why this is correct
Lists security-related updates.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
yum list updates
Why it's wrong here
Lists all updateable packages.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Trap categories for this question
Command / output trap
Not a valid command.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related XK0-005 NAT questions on configuration and troubleshooting.
System Management — study guide chapter
Learn the concepts, then practise the questions
System Management practice questions
Targeted practice on this topic area only
All XK0-005 questions
510 questions across all exam domains
CompTIA Linux+ XK0-005 study guide
Full concept coverage aligned to exam objectives
XK0-005 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise XK0-005 questions linked to Security.
Practise XK0-005 questions linked to Troubleshooting.
Practise XK0-005 questions linked to Scripting, Containers and Automation.
Practise XK0-005 questions linked to System Management.
Practise XK0-005 questions linked to XK0-005 fundamentals.
Practise XK0-005 questions linked to XK0-005 scenario.
Practise XK0-005 questions linked to XK0-005 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
System Management — This question tests System Management — Static NAT maps one inside address to one outside address..
The correct answer is: yum list-security — Option D is correct because `yum list-security` (or `dnf list-security`) lists security advisories and the associated packages with available updates. Option A is wrong because `yum check-update` lists all updates, not just security. Option B is wrong because `yum updateinfo list security` is not a valid command; the correct is `yum updateinfo list --sec`. Option C is wrong because `yum list updates` lists all updateable packages. Option E is wrong because `yum info-sec` is not a valid command.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related XK0-005 NAT questions on configuration and troubleshooting.
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 24, 2026
This XK0-005 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 XK0-005 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.