CV0-004 Network flow logs Practice Question
A cloud administrator wants to analyze network traffic to troubleshoot connectivity issues between VMs. Which feature should be enabled?
⚠ Common exam trap
CV0-004 often tests the confusion between control-plane audit logs (CloudTrail) and data-plane network flow logs, causing candidates to pick audit logging for connectivity troubleshooting.
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
✓
Network flow logs
Network flow logs capture metadata about IP traffic (source/destination IP, ports, protocol, bytes, packets, accept/reject) flowing through cloud network interfaces, subnets, or VPCs. This data is exactly what an administrator needs to troubleshoot connectivity issues between VMs, such as identifying blocked ports or asymmetric routing. Flow logs are available in AWS VPC Flow Logs, Azure NSG Flow Logs, and GCP VPC Flow Logs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Audit logging service
Why it's wrong here
Audit logging records control-plane API activity, such as who created or deleted a resource, not the packets traversing a virtual network. It is the correct choice when investigating administrative actions or meeting regulatory traceability requirements.
- ✓
Network flow logs
Why this is correct
Network flow logs capture metadata about IP traffic traversing the network — source, destination, port, protocol and accept/reject decisions — without inspecting payloads. This record lets the administrator trace whether packets reach their destination, pinpointing security group, NACL or routing problems between VMs.
- ✗
Distributed tracing service
Why it's wrong here
Distributed tracing correlates request spans across microservices, not packet-level flows between VMs, so it cannot reveal dropped packets or port blocking. It is tempting because it diagnoses latency in service meshes and serverless architectures, where tracing individual requests across components is the goal rather than inspecting raw network traffic.
- ✗
Configuration compliance service
Why it's wrong here
Configuration compliance evaluates resources against policy baselines and reports drift; it captures no packet-level data, so it cannot show connectivity between VMs. It is the right feature for detecting unauthorised configuration changes against a defined standard.
Visual reference
Quick reference
Asymmetric Encryption Algorithm Comparison
| Algorithm | Key Exchange | Signatures | Equivalent Security Key | Notes |
|---|---|---|---|---|
| RSA-3072 | Yes | Yes | 128-bit | Widely deployed; slow for bulk data |
| ECDSA P-256 | No | Yes | 128-bit | Fast signatures; standard TLS certs |
| ECDH / ECDHE | Yes | No | 128-bit | Perfect forward secrecy in TLS 1.3 |
| DH / DHE | Yes | No | 128-bit (3072-bit key) | Replaced by ECDHE in modern TLS |
| Ed25519 | No | Yes | ~128-bit | SSH keys, modern PKI |
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.