- A
Create a Lambda function that monitors for new VPCs and creates the transit gateway attachment.
Why wrong: This adds complexity and is not a native solution.
- B
Use an SCP to require that all VPCs have a specific tag and then use AWS Config to automatically create the attachment.
Why wrong: SCPs cannot create attachments.
- C
Use AWS Transit Gateway Network Manager and create a policy to automatically accept attachments from VPCs with a specific tag.
Network Manager can auto-accept attachments based on tags.
- D
Create a transit gateway in the networking account and share it with member accounts using AWS Resource Access Manager. Members create attachments and the networking team manually approves them.
Why wrong: Manual approval does not meet the automatic requirement.
Quick Answer
The answer is to use AWS Transit Gateway Network Manager with a tag-based policy to automatically accept attachment requests. This solution is correct because Network Manager enables you to define a policy that automatically approves transit gateway attachments from VPCs that carry a specific tag, such as “ApprovedVPC: true”, eliminating the need for manual approval while enforcing that only tagged, approved VPCs can connect. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of automating cross-account networking governance using AWS Organizations and centralized transit gateway management—a common trap is to confuse this with manual acceptance via the console or with AWS Resource Access Manager, which handles sharing but not auto-acceptance. Remember the key distinction: Network Manager policies are for auto-accepting attachments based on tags, not for sharing the gateway itself. A useful memory tip is “Tags Trigger Transit Acceptance”—if you tag the VPC, Network Manager lets it in automatically.
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses AWS Organizations with a centralized networking account that hosts a VPC with a transit gateway. Other accounts need to connect to this transit gateway. The company wants to ensure that only approved VPCs can attach to the transit gateway, and that the attachments are automatically approved when a VPC is created in a member account. Which solution meets 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
Use AWS Transit Gateway Network Manager and create a policy to automatically accept attachments from VPCs with a specific tag.
Option C is correct because AWS Transit Gateway Network Manager allows you to create a policy that automatically accepts attachment requests from VPCs that have a specific tag. This meets the requirement for automatic approval of approved VPCs without manual intervention, while ensuring only tagged VPCs are attached.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a Lambda function that monitors for new VPCs and creates the transit gateway attachment.
Why it's wrong here
This adds complexity and is not a native solution.
- ✗
Use an SCP to require that all VPCs have a specific tag and then use AWS Config to automatically create the attachment.
Why it's wrong here
SCPs cannot create attachments.
- ✓
Use AWS Transit Gateway Network Manager and create a policy to automatically accept attachments from VPCs with a specific tag.
Why this is correct
Network Manager can auto-accept attachments based on tags.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a transit gateway in the networking account and share it with member accounts using AWS Resource Access Manager. Members create attachments and the networking team manually approves them.
Why it's wrong here
Manual approval does not meet the automatic requirement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think a Lambda function or AWS Config is needed for automation, but AWS Transit Gateway Network Manager provides a native, policy-driven way to automatically accept attachments based on tags, which is simpler and more secure.
Detailed technical explanation
How to think about this question
AWS Transit Gateway Network Manager uses a central dashboard to manage and monitor transit gateways across accounts. The automatic attachment acceptance policy leverages resource tags to filter which VPCs are allowed to attach, and once the policy is in place, any VPC with the matching tag in a member account will have its attachment request automatically accepted by the transit gateway owner. This eliminates the need for custom automation or manual steps, and the tag-based control ensures only authorized VPCs are connected.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Design Solutions for Organizational Complexity — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Transit Gateway Network Manager and create a policy to automatically accept attachments from VPCs with a specific tag. — Option C is correct because AWS Transit Gateway Network Manager allows you to create a policy that automatically accepts attachment requests from VPCs that have a specific tag. This meets the requirement for automatic approval of approved VPCs without manual intervention, while ensuring only tagged VPCs are attached.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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