ANS-C01 Network Management and Operations Practice Question
A company has a hybrid network with multiple VPCs connected via AWS Transit Gateway and an on-premises network via Direct Connect. The network team is planning to migrate a legacy application from on-premises to a new VPC. The application requires low-latency access to an RDS database running in an existing VPC. The team wants to minimize changes to the existing routing. What should the team do to meet these requirements?
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
✓
Attach the new VPC to the existing transit gateway and ensure the transit gateway route tables permit traffic between the new VPC and the RDS VPC.
Attaching the new VPC to the existing transit gateway allows immediate connectivity to the RDS VPC without changing existing routes, provided the transit gateway route tables are configured correctly. Option B is wrong because routing traffic through on-premises adds unnecessary latency and complexity. Option C is wrong because VPC peering requires route table updates in both VPCs, which contradicts the requirement to minimize routing changes. Option D is wrong because migrating the RDS database would change the database endpoint and potentially cause downtime, and does not leverage the existing transit gateway.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Attach the new VPC to the existing transit gateway and ensure the transit gateway route tables permit traffic between the new VPC and the RDS VPC.
Why this is correct
Correct: Leveraging existing transit gateway minimizes routing changes.
- ✗
Set up a VPN connection from the new VPC to the on-premises network, and route traffic through on-premises to the RDS VPC.
Why it's wrong here
Incorrect: This adds latency and unnecessary hops.
- ✗
Create a VPC peering connection between the new VPC and the RDS VPC.
Why it's wrong here
Incorrect: VPC peering requires route table modifications in both VPCs, increasing complexity.
- ✗
Migrate the RDS database to the new VPC to keep the application and database in the same VPC.
Why it's wrong here
Incorrect: Moving the database may cause downtime and is not minimal change.
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JA
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.