SAP-C02 Practice Question: Design Solutions for Organizational Complexity
A company has a management account in AWS Organizations and wants to share a central Amazon VPC subnet with multiple member accounts for a shared services VPC. Which AWS service should be used to share the subnet?
⚠ Common exam trap
Many candidates confuse VPC peering (which connects entire VPCs) with subnet sharing (which allows direct resource placement into a shared subnet), leading them to select VPC peering instead of AWS Resource Access Manager.
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
✓
AWS Resource Access Manager
AWS Resource Access Manager (RAM) is the correct service because it enables you to share a central VPC subnet from a management account with multiple member accounts in AWS Organizations without requiring VPC peering or transit gateways. With RAM, you create a resource share that includes the subnet and specify the member accounts or organizational units (OUs) to grant them access, allowing those accounts to launch resources directly into the shared subnet while maintaining centralized network management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VPC peering connection
Why it's wrong here
VPC peering connects two VPCs privately but cannot share a subnet; each account keeps its own subnets and CIDRs. It tempts as the standard cross-account connectivity pattern, yet it would be correct only for routing traffic between separate VPCs, not for placing member-account resources into the management account's subnet.
- ✓
AWS Resource Access Manager
Why this is correct
AWS Resource Access Manager (RAM) shares subnets directly between accounts via resource shares, letting member accounts launch resources into the central VPC subnet. This satisfies the cross-account subnet sharing requirement without VPC peering or Transit Gateway, which cannot share subnets themselves.
- ✗
AWS PrivateLink
Why it's wrong here
PrivateLink exposes a service via interface endpoints in the consumer VPC; it does not place resources inside the provider's subnet. It tempts for private cross-account access to specific services, but the requirement is shared subnet participation, which needs VPC sharing through AWS Resource Access Manager.
- ✗
Service control policy
Why it's wrong here
Service control policies govern maximum permissions for accounts in an organisation; they provision no networking resources. It tempts because SCPs are the organisation-level control in AWS Organizations, but they would be correct only for restricting what member accounts may do, not for sharing a subnet.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 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 SAP-C02 exam.