This EX200 practice question tests your understanding of configure local storage. 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.
Network Topology
Refer to the exhibit. An administrator needs to create a new logical volume named 'data' of size 3GB. Which command should be used?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
lvcreate -n data -L 3G vg01
Option A is correct because the `lvcreate` command with `-n data` names the logical volume 'data', `-L 3G` sets its size to 3 gigabytes, and `vg01` specifies the volume group that contains the physical volumes. This matches the requirement exactly, assuming the volume group `vg01` exists and has sufficient free extents.
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.
✓
lvcreate -n data -L 3G vg01
Why this is correct
Correct. vg01 has 5GB free, sufficient for the LV.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
lvcreate -n data -L 3G vg00
Why it's wrong here
Incorrect. vg00 has only 2GB free, not enough for a 3GB LV.
✗
lvcreate -n data -L 3G /dev/sda1
Why it's wrong here
Incorrect. lvcreate requires a volume group, not a physical volume.
✗
lvcreate -n data -l 100 vg01
Why it's wrong here
Incorrect. 100 extents is too small (400MB).
✗
lvcreate -n data -l 100 vg00
Why it's wrong here
Incorrect. -l specifies extents; 100 extents at 4MB each is 400MB, not 3GB, and vg00 is the wrong VG.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Red Hat often tests the distinction between the `-L` (size in units) and `-l` (number of extents) options, and the requirement to specify a volume group name rather than a device path, to catch candidates who confuse LVM syntax with standard partition commands.
Detailed technical explanation
How to think about this question
The `-L` flag specifies size in human-readable units (e.g., G for gigabytes), while `-l` specifies the number of logical extents; the extent size is set when the volume group is created (default 4 MiB) and can be viewed with `vgdisplay`. In LVM, logical volumes are created from free extents in a volume group, and the volume group must be specified by name, not by a device path. A real-world scenario: using `-l` instead of `-L` can lead to unexpected sizes if the extent size differs from the default, causing provisioning errors in automated scripts.
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.
TExam Day Tips
→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 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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Configure local storage — This question tests Configure local storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: lvcreate -n data -L 3G vg01 — Option A is correct because the `lvcreate` command with `-n data` names the logical volume 'data', `-L 3G` sets its size to 3 gigabytes, and `vg01` specifies the volume group that contains the physical volumes. This matches the requirement exactly, assuming the volume group `vg01` exists and has sufficient free extents.
What should I do if I get this EX200 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
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.
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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