CV0-004 Troubleshooting Practice Question
A cloud administrator is troubleshooting a web application that is hosted on a VM in a public cloud. Users report that the application is intermittently unavailable. The administrator checks the cloud provider's status page and sees no ongoing incidents. Which two actions should the administrator take to diagnose the issue? (Choose two.)
⚠ Common exam trap
The trap here is jumping to resource scaling or rebooting before gathering diagnostic data, which can mask the root cause and lead to unnecessary changes.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Review the VM's system logs for errors or warnings around the times of unavailability.
To diagnose intermittent unavailability without a provider incident, the administrator should examine the VM's system logs for errors and verify network ACLs and security group rules. These actions directly investigate the VM's health and network configuration, which are common causes of intermittent accessibility. They are immediate, non-destructive steps that can reveal misconfigurations or application faults.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reboot the VM to clear any transient issues.
Why it's wrong here
Rebooting the VM may temporarily resolve the issue but destroys evidence needed for root cause analysis. It is a reactive measure that does not help diagnose the problem. In a troubleshooting scenario, rebooting should be a last resort after collecting logs and metrics. It could also cause additional downtime if the issue persists.
- ✗
Enable detailed monitoring on the VM and wait for the next occurrence.
Why it's wrong here
Enabling detailed monitoring is useful for long-term analysis, but it requires waiting for the issue to recur, which delays resolution. The administrator should first check existing logs and configurations that might already contain clues. Detailed monitoring can be part of the solution, but it is not an immediate diagnostic action when the issue is ongoing or recent.
- ✗
Increase the VM's CPU and memory resources to handle potential spikes.
Why it's wrong here
While resource exhaustion can cause unavailability, increasing resources without first diagnosing the cause is premature and may not solve the issue. It also increases cost. The administrator should first gather data to confirm if resource constraints are the problem. If logs show high utilization, then scaling up might be appropriate, but it is not a diagnostic step.
- ✓
Review the VM's system logs for errors or warnings around the times of unavailability.
Why this is correct
System logs on the VM can reveal application crashes, kernel panics, or resource exhaustion events that correlate with the unavailability. Checking logs around the reported times is a fundamental troubleshooting step to identify patterns or specific errors. This action is non-intrusive and can quickly point to the root cause, such as a service restarting or running out of memory.
- ✓
Check the cloud provider's network ACLs and security group rules for the VM.
Why this is correct
Misconfigured network ACLs or security groups can intermittently block traffic if rules are changed or if there are conflicts. Reviewing these rules ensures that the expected ports (e.g., 80, 443) are open and that no deny rules are causing sporadic blocks. This is a key step in diagnosing network-related availability issues, especially if the VM itself appears healthy.
Go deeper
Related to this question
About these practice questions
This CV0-004 question is part of Courseiva's 834-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.