This EX200 practice question tests your understanding of deploy, configure, and maintain systems. 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.
Which three of the following are required steps to create a new logical volume of 5GB in an existing volume group 'vg00'?
Create a logical volume with lvcreate
Necessary to create the new logical volume.
Format the logical volume with a filesystem (e.g., mkfs)
After creating the LV, it must be formatted.
Mount the filesystem
Mounting makes the filesystem accessible.
Create a physical volume
Why wrong: The volume group already exists; physical volumes are already in place.
Create a volume group
Why wrong: The volume group vg00 already exists.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Create a logical volume with lvcreate
Option A is correct because `lvcreate` is the command used to create a new logical volume within an existing volume group. For a 5GB volume in vg00, the command would be `lvcreate -L 5G -n lvname vg00`. This step is mandatory to allocate the logical volume from the free extents in the volume group.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Create a logical volume with lvcreate
Why this is correct
Necessary to create the new logical volume.
Related concept
Read the scenario before looking for a memorised answer.
Format the logical volume with a filesystem (e.g., mkfs)
Why this is correct
After creating the LV, it must be formatted.
Related concept
Read the scenario before looking for a memorised answer.
Mount the filesystem
Why this is correct
Mounting makes the filesystem accessible.
Related concept
Read the scenario before looking for a memorised answer.
Create a physical volume
Why it's wrong here
The volume group already exists; physical volumes are already in place.
Create a volume group
Why it's wrong here
The volume group vg00 already exists.
Common exam traps
The trap here is that candidates confuse the entire LVM creation workflow (PV → VG → LV → filesystem → mount) with the steps required when the volume group already exists, leading them to incorrectly select D or E as necessary steps.
Detailed technical explanation
Under the hood, LVM uses a layered architecture: physical volumes (PVs) are initialized on block devices, volume groups (VGs) pool the PVs' space into extents, and logical volumes (LVs) are carved from those extents. The `lvcreate` command allocates logical extents (LEs) from the VG's physical extents (PEs). A real-world scenario is resizing an LV later: you must have free PEs in the VG, or you must add a new PV and extend the VG first.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the EX200 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.
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FAQ
Deploy, configure, and maintain systems — This question tests Deploy, configure, and maintain systems — Read the scenario before looking for a memorised answer..
The correct answer is: Create a logical volume with lvcreate — Option A is correct because `lvcreate` is the command used to create a new logical volume within an existing volume group. For a 5GB volume in vg00, the command would be `lvcreate -L 5G -n lvname vg00`. This step is mandatory to allocate the logical volume from the free extents in the volume group.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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