- A
Associate the Direct Connect Gateway with the Transit Gateway.
This enables on-premises connectivity through the transit gateway.
- B
Establish VPC peering connections between VPCs that need to communicate.
Why wrong: Transit Gateway replaces the need for VPC peering.
- C
Use security groups to control traffic between VPCs.
Why wrong: Security groups are instance-level and not used for inter-VPC traffic control in Transit Gateway.
- D
Configure Transit Gateway peering attachments for inter-region connectivity.
Why wrong: The question does not mention inter-region; intra-region connectivity is handled by the transit gateway itself.
- E
Create separate Transit Gateway route tables for different groups of VPCs.
Route tables enable segmentation and control of traffic flow.
Quick Answer
The answer is to create separate Transit Gateway route tables for different groups of VPCs. This is correct because Transit Gateway route tables control traffic between VPCs and on-premises networks by defining which attachments can route to each other; isolating VPCs into distinct route tables prevents unwanted inter-VPC communication while allowing selective connectivity through the Direct Connect Gateway association. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this concept tests your understanding of how route tables act as the central policy engine for traffic flow, with a common trap being to confuse VPC peering or Security Groups as the control mechanism—remember that Transit Gateway uses route tables, not security groups, for inter-VPC routing. A key memory tip is to think of each Transit Gateway route table as a separate "room" in a building, where only attachments in the same room can see each other unless you add a specific route to another room.
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.
A company is setting up AWS Transit Gateway with multiple VPC attachments and an AWS Direct Connect Gateway. The company wants to control which VPCs can communicate with each other and with the on-premises network. Which THREE actions should the company take to implement this?
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
Associate the Direct Connect Gateway with the Transit Gateway.
Option A is correct because route tables define how traffic is routed between attachments. Option C is correct because transit gateway peering attachments are used for inter-region connectivity, not intra-region. Option D is correct because the Direct Connect Gateway can be associated with the transit gateway to enable on-premises connectivity. Option B is wrong because VPC peering is not needed with Transit Gateway. Option E is wrong because Security Groups are not used to control traffic between VPCs in Transit Gateway.
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.
- ✓
Associate the Direct Connect Gateway with the Transit Gateway.
Why this is correct
This enables on-premises connectivity through the transit gateway.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Establish VPC peering connections between VPCs that need to communicate.
Why it's wrong here
Transit Gateway replaces the need for VPC peering.
- ✗
Use security groups to control traffic between VPCs.
Why it's wrong here
Security groups are instance-level and not used for inter-VPC traffic control in Transit Gateway.
- ✗
Configure Transit Gateway peering attachments for inter-region connectivity.
Why it's wrong here
The question does not mention inter-region; intra-region connectivity is handled by the transit gateway itself.
- ✓
Create separate Transit Gateway route tables for different groups of VPCs.
Why this is correct
Route tables enable segmentation and control of traffic flow.
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 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 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 — study guide chapter
Learn the concepts, then practise the questions
- →
Network Implementation practice questions
Targeted practice on this topic area only
- →
All ANS-C01 questions
1,705 questions across all exam domains
- →
AWS Certified Advanced Networking Specialty ANS-C01 study guide
Full concept coverage aligned to exam objectives
- →
ANS-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related ANS-C01 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Network Management and Operations practice questions
Practise ANS-C01 questions linked to Network Management and Operations.
Network Security, Compliance and Governance practice questions
Practise ANS-C01 questions linked to Network Security, Compliance and Governance.
Network Design practice questions
Practise ANS-C01 questions linked to Network Design.
Network Implementation practice questions
Practise ANS-C01 questions linked to Network Implementation.
ANS-C01 fundamentals practice questions
Practise ANS-C01 questions linked to ANS-C01 fundamentals.
ANS-C01 scenario practice questions
Practise ANS-C01 questions linked to ANS-C01 scenario.
ANS-C01 troubleshooting practice questions
Practise ANS-C01 questions linked to ANS-C01 troubleshooting.
Practice this exam
Start a free ANS-C01 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this ANS-C01 question test?
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: Associate the Direct Connect Gateway with the Transit Gateway. — Option A is correct because route tables define how traffic is routed between attachments. Option C is correct because transit gateway peering attachments are used for inter-region connectivity, not intra-region. Option D is correct because the Direct Connect Gateway can be associated with the transit gateway to enable on-premises connectivity. Option B is wrong because VPC peering is not needed with Transit Gateway. Option E is wrong because Security Groups are not used to control traffic between VPCs in Transit Gateway.
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 →
Same concept, more angles
1 more ways this is tested on ANS-C01
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. A company has set up a transit gateway with attachments to VPC-A and VPC-B. The transit gateway route table shows routes to both VPCs and a blackhole for 0.0.0.0/0. VPC-A's public subnet route table sends 10.1.0.0/16 traffic to the transit gateway. However, an EC2 instance in VPC-A's public subnet cannot reach an instance in VPC-B. What is the most likely cause?
medium- ✓ A.VPC-B's route table does not have a route to VPC-A's CIDR via the transit gateway.
- B.VPC-A's route table does not have a route to the transit gateway.
- C.The transit gateway route table does not have a route for 10.0.0.0/16.
- D.The blackhole route in the transit gateway is blocking traffic between VPCs.
Why A: Option A is correct because for traffic to flow from VPC-A to VPC-B via a transit gateway, both VPCs must have routes in their route tables pointing to the transit gateway for the other VPC's CIDR. Since VPC-A's route table sends 10.1.0.0/16 (VPC-B's CIDR) to the transit gateway, but VPC-B's route table lacks a return route to VPC-A's CIDR via the transit gateway, the return traffic from VPC-B is dropped, causing connectivity failure.
Keep practising
More ANS-C01 practice questions
- A company is designing a network security architecture for a multi-account environment using AWS Transit Gateway. The se…
- A company is using AWS Direct Connect to connect its on-premises network to AWS. The company wants to encrypt all traffi…
- A company uses AWS Transit Gateway to connect multiple VPCs and on-premises networks via AWS Site-to-Site VPN. The secur…
- A global e-commerce company uses a hub-and-spoke network topology with a transit VPC in us-east-1. Each spoke VPC has an…
- A company is designing a multi-VPC architecture in the same region. The VPCs need to communicate with each other using p…
- A company is deploying an application that requires low-latency communication between EC2 instances in two different AWS…
Last reviewed: Jun 20, 2026
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
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.