CV0-004 Operations and Support Practice Question
A cloud engineer is troubleshooting a network connectivity issue between two VPCs in AWS. To analyze traffic patterns and identify dropped packets, which feature should be enabled?
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
✓
VPC Flow Logs
VPC Flow Logs capture information about IP traffic going to and from network interfaces in a VPC, useful for troubleshooting connectivity and security issues.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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VPC Flow Logs
Why this is correct
VPC Flow Logs capture IP traffic metadata for network interfaces, subnets or VPCs, recording accepted and rejected packets. Enabling them on the affected interfaces lets the engineer analyse traffic patterns and pinpoint where packets are dropped between the two VPCs.
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AWS CloudTrail
Why it's wrong here
CloudTrail records AWS API calls and account activity for auditing, not packet flows between VPCs. It tempts engineers because it can reveal whether a route table, security group or NACL was modified, and it would be correct when investigating who changed network configuration rather than analysing dropped packets.
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Amazon Inspector
Why it's wrong here
Inspector scans EC2 instances and container images for software vulnerabilities and unintended network exposure; it does not capture packet-level traffic or drops. It tempts engineers because it reports network reachability findings, and it would be correct when assessing whether instances have exploitable vulnerabilities or overly permissive security group rules.
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AWS X-Ray
Why it's wrong here
X-Ray traces application requests through distributed services, revealing latency and errors in code paths, not VPC packet flows. It tempts engineers because X-Ray diagnoses connectivity-like failures between microservices, and it would be correct when tracing an API call across Lambda functions rather than inspecting dropped packets between VPCs.
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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.