The correct answer is that Transit Gateway provides centralised management of network policies and routing, along with transitive routing between all connected VPCs. Unlike VPC peering, which requires a full mesh of individual connections and manual route table updates for each pair, Transit Gateway acts as a single hub, enabling any-to-any connectivity through a central router. This eliminates the complexity of managing dozens or hundreds of peering relationships and allows you to apply consistent routing policies from one place. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this question tests your understanding of architectural trade-offs: a common trap is assuming Transit Gateway reduces data transfer costs or provides built-in encryption, but it does not—it may even increase costs due to per-GB processing fees. Remember that Transit Gateway is about transitive routing and central control, not cost savings or security features. A helpful memory tip: think “Hub-and-Spoke for Control, not for Cost.”
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. 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.
Which TWO of the following are benefits of using an AWS Transit Gateway over VPC peering for connecting multiple VPCs? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Transitive routing between all attached VPCs.
Options B and C are correct. Transit Gateway provides transitive routing (hub-and-spoke) and centralised management. Option A is wrong because Transit Gateway does not reduce data transfer costs; it may increase. Option D is wrong because it does not automatically encrypt traffic. Option E is wrong because it does not provide built-in internet access.
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.
No automatic encryption; use VPN or other methods.
✓
Transitive routing between all attached VPCs.
Why this is correct
Hub-and-spoke model allows any-to-any connectivity.
Related concept
Read the scenario before looking for a memorised answer.
✓
Centralised management of network policies and routing.
Why this is correct
Single point of control for multiple VPCs.
Related concept
Read the scenario before looking for a memorised answer.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which ANS-C01 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.
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Transitive routing between all attached VPCs. — Options B and C are correct. Transit Gateway provides transitive routing (hub-and-spoke) and centralised management. Option A is wrong because Transit Gateway does not reduce data transfer costs; it may increase. Option D is wrong because it does not automatically encrypt traffic. Option E is wrong because it does not provide built-in internet access.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which THREE of the following are benefits of using AWS Transit Gateway over VPC peering for inter-VPC connectivity? (Choose three.)
hard
✓ A.Transitive routing between all attached VPCs
B.Lower latency than VPC peering
✓ C.Support for connecting to on-premises networks via Direct Connect and VPN
D.No additional cost compared to VPC peering
✓ E.Centralized management of network connections
Why A: Transit Gateway simplifies connectivity by acting as a hub, supports transitive routing, and can connect multiple VPCs and on-premises networks via a single gateway.
Variation 2. Which TWO scenarios are best suited for using AWS Transit Gateway over VPC peering? (Select TWO.)
hard
A.Connecting VPCs in different AWS accounts
B.Connecting a single VPC to an on-premises network
✓ C.Connecting hundreds of VPCs across multiple accounts
✓ D.Connecting VPCs to on-premises via Direct Connect
E.Connecting two VPCs in the same account and region
Why C: Options B and D are correct. Transit Gateway is ideal for many VPCs and for connecting VPCs with Direct Connect. Option A is wrong because one-to-one is simpler with peering. Option C is wrong because VPC peering can also be used for cross-account. Option E is wrong because a single VPC does not need Transit Gateway.
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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.
Question Discussion
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