The correct sequence is pvcreate, vgextend, then lvextend. This order is mandatory because LVM requires a physical volume to be initialized before it can be added to a volume group, and the volume group must contain the new physical volume before the logical volume can be extended. On the CompTIA Linux+ XK0-005 exam, this question tests your understanding of the LVM lifecycle and the dependency chain between physical volumes, volume groups, and logical volumes. A common trap is attempting to extend the logical volume before adding the disk to the volume group, or running vgextend before pvcreate, both of which will fail. Remember the mnemonic "PV-VG-LV" in that exact order: first prepare the disk, then add it to the pool, then grow the logical volume.
XK0-005 System Management Practice Question
This XK0-005 practice question tests your understanding of system management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An administrator needs to extend the size of a logical volume named 'lv_data' in volume group 'vg_data' by 10 GB. A new disk /dev/sdb has been added to the system. What is the correct sequence of commands?
Option A is correct. The correct order is: pvcreate to initialize the disk, vgextend to add it to the volume group, then lvextend to increase the logical volume size. Options B and D have wrong order; Option C misses pvcreate or has it after vgextend.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the XK0-005 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this XK0-005 question in full detail.
Identify which XK0-005 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
System Management — This question tests System Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: pvcreate /dev/sdb; vgextend vg_data /dev/sdb; lvextend -L +10G /dev/vg_data/lv_data — Option A is correct. The correct order is: pvcreate to initialize the disk, vgextend to add it to the volume group, then lvextend to increase the logical volume size. Options B and D have wrong order; Option C misses pvcreate or has it after vgextend.
What should I do if I get this XK0-005 question wrong?
Identify which XK0-005 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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