ANS-C01 Network Management and Operations Practice Question
A company has deployed a multi-VPC architecture with AWS Transit Gateway. The network team notices that traffic between two VPCs is intermittently dropped. Both VPCs are attached to the same transit gateway. Which action should the network engineer take to troubleshoot the issue?
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
✓
Enable VPC Flow Logs on the subnets of the VPCs.
VPC Flow Logs capture IP traffic information at the network interface level, allowing engineers to analyze traffic patterns and identify dropped packets. Option A is incorrect because AWS Direct Connect is a dedicated network connection from on-premises to AWS, not between VPCs. Option B is incorrect because Transit Gateway Network Manager provides a visual representation of the network topology but does not provide packet-level details. Option C is incorrect because CloudWatch metrics for transit gateway attachments show aggregate metrics like bytes in/out but not individual packet drops.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure AWS Direct Connect to route traffic between the VPCs.
Why it's wrong here
Direct Connect is for on-premises connectivity, not inter-VPC traffic.
- ✗
Use Transit Gateway Network Manager to view the network topology.
Why it's wrong here
Network Manager shows topology, not packet drops.
- ✗
Enable CloudWatch metrics for the transit gateway attachments.
Why it's wrong here
CloudWatch metrics provide aggregated statistics, not packet-level drops.
- ✓
Enable VPC Flow Logs on the subnets of the VPCs.
Why this is correct
VPC Flow Logs capture detailed traffic data, including dropped packets.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services 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 ANS-C01 exam.