CV0-004 Troubleshooting Practice Question
A company has a cloud-based application that uses a relational database. The database team performs daily backups to an on-premises storage system using a VPN connection. Recently, backups have been failing with timeout errors. The network team confirms the VPN is up and stable. Which of the following is the MOST likely cause?
⚠ Common exam trap
Test-takers frequently assume a stable VPN means the link has sufficient capacity, but CompTIA often tests the distinction between connectivity (layer 3) and throughput (layer 4/performance), where a stable tunnel can still be too slow for large data transfers.
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
✓
The VPN bandwidth is insufficient for the backup data volume
The VPN connection is confirmed stable, so tunnel configuration and firewall issues are unlikely. Backup timeout errors with large data volumes typically indicate insufficient bandwidth, causing the transfer to exceed the timeout threshold. The database service itself is responding (backups are attempted), ruling out service unavailability.
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 database service is not responding
Why it's wrong here
If the database were not responding, the application would also be affected, not just backups.
- ✓
The VPN bandwidth is insufficient for the backup data volume
Why this is correct
Large backups can exceed VPN capacity, leading to timeouts.
- ✗
The VPN tunnel is not properly configured
Why it's wrong here
The network team confirmed the VPN is up and stable.
- ✗
The on-premises firewall is blocking the backup port
Why it's wrong here
A port block would cause immediate failure, not intermittent timeouts.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.