VCP-DCV Configure and Manage vSphere Storage Practice Question
This VCP-DCV practice question tests your understanding of configure and manage vsphere storage. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 runs vmkfstools on a VMFS datastore and receives the output shown. The datastore is backed by a single LUN from a SAN array. What is the most likely explanation for the multiple extents shown?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The datastore was expanded by adding an extent from the same LUN.
When a VMFS datastore is expanded using the same LUN, vmkfstools can show multiple extents because the additional space is added as a separate extent on the same physical LUN. This is a common practice to grow a datastore without reprovisioning a new LUN, and the output reflects the original and expanded extents both pointing to the same LUN identifier.
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.
✗
The LUN was presented to the host with multiple paths, and each path is treated as a separate extent.
Why it's wrong here
Multiple paths to the same LUN do not create separate extents; they appear as the same device with multiple paths.
✓
The datastore was expanded by adding an extent from the same LUN.
Why this is correct
When expanding a VMFS datastore, the system can add extents from the same LUN, leading to multiple extents as shown.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The datastore is a VMFS6 datastore with three logical volumes aggregated into one namespace.
Why it's wrong here
VMFS6 does not aggregate logical volumes; extents are from the same physical LUN.
✗
The virtual machine has a large VMDK file that spans multiple extents due to VMFS6 sub-block allocation.
Why it's wrong here
Large VMDK files are stored as a single file on VMFS6; sub-blocks are for small files, not extents.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse multipathing (multiple paths to a LUN) with multiple extents, or assume that VMFS6's sub-block allocation creates extents for VMDK files, when in fact extents are a datastore-level construct, not a virtual disk feature.
Detailed technical explanation
How to think about this question
VMFS datastores can consist of up to 32 extents, each being a contiguous block of storage from a LUN or partition. When expanding a datastore with the same LUN, the new space is added as a second extent, which vmkfstools -P reveals as multiple extents with the same device name. This is distinct from spanning a datastore across multiple LUNs, where each extent would have a different device identifier.
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 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
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 and Manage vSphere Storage — This question tests Configure and Manage vSphere Storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The datastore was expanded by adding an extent from the same LUN. — When a VMFS datastore is expanded using the same LUN, vmkfstools can show multiple extents because the additional space is added as a separate extent on the same physical LUN. This is a common practice to grow a datastore without reprovisioning a new LUN, and the output reflects the original and expanded extents both pointing to the same LUN identifier.
What should I do if I get this VCP-DCV 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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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