ANS-C01 Network Design Practice Question
A company needs to establish private connectivity between two VPCs in different AWS accounts. The VPCs are in the same Region. Which AWS feature should be used?
⚠ Common exam trap
Candidates often choose AWS Transit Gateway because they think it is required for cross-account connectivity, but VPC peering directly supports cross-account VPC connections in the same Region without needing a central hub.
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 peering
VPC peering is the correct choice because it establishes a direct, private network connection between two VPCs in the same AWS Region, even across different AWS accounts, using the AWS backbone without requiring a transit hub or external connectivity. It leverages the existing AWS infrastructure to route traffic between the VPCs via private IPv4 or IPv6 addresses, with no bandwidth bottlenecks or single points of failure inherent in the design.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Transit Gateway
Why it's wrong here
AWS Transit Gateway is designed for establishing a central hub for network connectivity across numerous VPCs, accounts, and on-premises networks, facilitating complex hub-and-spoke architectures. For a direct, point-to-point private connection exclusively between just two VPCs, it introduces an unnecessary intermediate routing layer. It would be the correct choice if the requirement involved connecting multiple VPCs, integrating with on-premises data centres, or managing complex routing policies.
- ✗
AWS Direct Connect
Why it's wrong here
Direct Connect connects on-premises to AWS, not VPC to VPC.
- ✓
VPC peering
Why this is correct
VPC peering enables private connectivity between VPCs across accounts.
- ✗
AWS Site-to-Site VPN
Why it's wrong here
VPN connects on-premises to VPC.
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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.