- A
The Transit Gateway is in a different AWS account, so route propagation is not automatic.
Why wrong: Route propagation must be configured, but account is not the issue.
- B
The Transit Gateway route tables do not have routes for the attached VPCs.
Transit Gateway route tables need routes to forward traffic.
- C
The security groups in the workload VPCs are blocking traffic.
Why wrong: Security groups are per-VPC and not related to Transit Gateway routing.
- D
VPC flow logs are not enabled.
Why wrong: Flow logs do not affect traffic flow.
Question 797 of 1,746
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 has a multi-account AWS environment with a central network account and multiple workload accounts. They want to use AWS Transit Gateway to connect VPCs across accounts. The network team has created a Transit Gateway in the network account and shared it using AWS Resource Access Manager (RAM) with the workload accounts. The workload accounts have created VPC attachments to the Transit Gateway. However, traffic is not flowing between the VPCs. The route tables in the workload VPCs have routes pointing to the Transit Gateway. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
✓
The Transit Gateway route tables do not have routes for the attached VPCs.
The most likely cause is that the Transit Gateway route tables do not have routes for the attached VPCs. Even though the Transit Gateway is shared and VPC attachments are created, the Transit Gateway route tables must contain routes pointing to the attached VPCs for traffic to flow. By default, VPC attachments are not automatically propagated to the Transit Gateway route table. Option A is incorrect because route propagation is automatic when attachments are created, but only if the route table is configured for propagation. Option C is incorrect because security groups are stateful and allow return traffic; they would not block traffic between VPCs if the correct rules are in place. Option D is incorrect because VPC flow logs are a monitoring tool and do not affect traffic flow.
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.
- ✗
The Transit Gateway is in a different AWS account, so route propagation is not automatic.
Why it's wrong here
Route propagation must be configured, but account is not the issue.
- ✓
The Transit Gateway route tables do not have routes for the attached VPCs.
Why this is correct
Transit Gateway route tables need routes to forward traffic.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The security groups in the workload VPCs are blocking traffic.
Why it's wrong here
Security groups are per-VPC and not related to Transit Gateway routing.
- ✗
VPC flow logs are not enabled.
Why it's wrong here
Flow logs do not affect traffic flow.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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: The Transit Gateway route tables do not have routes for the attached VPCs. — The most likely cause is that the Transit Gateway route tables do not have routes for the attached VPCs. Even though the Transit Gateway is shared and VPC attachments are created, the Transit Gateway route tables must contain routes pointing to the attached VPCs for traffic to flow. By default, VPC attachments are not automatically propagated to the Transit Gateway route table. Option A is incorrect because route propagation is automatic when attachments are created, but only if the route table is configured for propagation. Option C is incorrect because security groups are stateful and allow return traffic; they would not block traffic between VPCs if the correct rules are in place. Option D is incorrect because VPC flow logs are a monitoring tool and do not affect traffic flow.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
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