The correct actions are to clear temporary files and logs, and increase the size of the existing disk. Clearing temporary files and logs immediately frees up space without any downtime, directly addressing the high disk usage VM alert while the critical database continues running. Increasing the disk size is equally vital because modern hypervisors support live resizing, allowing you to minimize downtime by expanding the virtual disk without a reboot; the OS can then extend the partition online using tools like `resize2fs` on Linux or Disk Management on Windows. On the CompTIA Cloud+ CV0-004 exam, this scenario tests your understanding of live storage operations versus offline methods—a common trap is choosing to migrate the VM or take a snapshot, which introduces unnecessary downtime. Remember the mnemonic “Clean then Grow”: clear temp files first for immediate relief, then grow the disk for long-term capacity, all while keeping the VM online.
CV0-004 Troubleshooting Practice Question
This CV0-004 practice question tests your understanding of troubleshooting. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 cloud administrator receives an alert that a VM's disk usage is at 95%. The VM is running a critical database. Which TWO actions should the administrator take to resolve the issue while minimizing downtime?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Increase the size of the existing disk
Increasing the size of the existing disk (Option A) is correct because it allows the VM to gain additional storage capacity without requiring a reboot or migration, minimizing downtime. Modern hypervisors and cloud platforms support live resizing of virtual disks, and once the disk is expanded, the OS can extend the partition online using tools like `resize2fs` (Linux) or Disk Management (Windows). This directly addresses the 95% disk usage alert for the critical database with minimal service interruption.
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.
✓
Increase the size of the existing disk
Why this is correct
Many cloud providers allow online disk resizing without rebooting.
Related concept
Read the scenario before looking for a memorised answer.
✗
Shrink an existing partition to free space
Why it's wrong here
Shrinking partitions is risky and may not be supported online.
✓
Clear temporary files and logs
Why this is correct
Cleaning logs and temp files can free space quickly and safely.
Related concept
Read the scenario before looking for a memorised answer.
✗
Restore the VM from a recent backup to a larger disk
Why it's wrong here
Restoring from backup causes significant downtime.
✗
Add a new disk and move data to it
Why it's wrong here
Moving data requires application downtime and reconfiguration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose Option E (add a new disk) thinking it is safer or more standard, but they overlook that expanding the existing disk is faster and causes less downtime for a critical database, and that adding a new disk introduces additional management overhead and potential service interruption.
Detailed technical explanation
How to think about this question
When expanding a virtual disk in a hypervisor like VMware vSphere or Hyper-V, the disk file (e.g., .vmdk or .vhdx) is extended at the storage layer, and the guest OS must then recognize the new unallocated space. For Linux, the `growpart` tool can resize the partition table, followed by `resize2fs` to expand the filesystem online; for Windows, the `Extend Volume` option in Disk Management works without a reboot. This process avoids the complexity of adding a new disk, which would require creating a new partition, formatting it, and reconfiguring the database to use the new path—often necessitating a service restart.
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 CV0-004 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.
Troubleshooting — This question tests Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Increase the size of the existing disk — Increasing the size of the existing disk (Option A) is correct because it allows the VM to gain additional storage capacity without requiring a reboot or migration, minimizing downtime. Modern hypervisors and cloud platforms support live resizing of virtual disks, and once the disk is expanded, the OS can extend the partition online using tools like `resize2fs` (Linux) or Disk Management (Windows). This directly addresses the 95% disk usage alert for the critical database with minimal service interruption.
What should I do if I get this CV0-004 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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